英语中Should的用法
在下面这个句子中，should起什么作用？在此处是否是句型的变化版？
最好可以给出参考书目或网页。谢谢。
I watched him looking intently in the direction where the man-eater was still demonstrating, his 12-bore gun ready for instant action should the animal charge.
一、should表示义务、责任、劝告、建议。
例如：
You should go to class right away.
你应该马上去上课。
二、情态动词should用于第一人称时可以表示说话人的一种谦逊、客气、委婉的语气。
例如：
I should think it would be better to try it again.
我倒是认为最好再试一试。
三、Should还可以用在if引导的条件从句，表示一件事听起来可能性很小，但也不是完全没有可能。相当于“万一”的意思。从句谓语由should加动词原形构成，主句谓语却不一定用虚拟语气。
例如：
Ask her to ring me up if you should see her.
你万一见到她，请让她给我打个电话。
四、Why(or How) + should结构表示说话人对某事不能理解，感到意外、惊异等意思。意为“竟会”。
例如：
Why should you be so late today?
你几天怎么来得这么晚？
五、“should + have + 过去分词”结构一般表示义务，表示应该做到而实际上没有做到，并包含一种埋怨、责备的口气。
例如：
She should have finished it.
她本应该完成它的。
扩展资料
比较should和ought to
1、表示“应该”，ought to表示义务或责任，语气更严重。
例如：
You ought to bring up this child.
你应该把这个孩子抚养成人。
2、表示劝告、建议和命令，两个通用。
例如：
You should / ought to go to class right away.
你应该马上去上课。
3、表示客观推测，两个通用。
例如：
The doctor ought to/should be busy now.
医生现在应该很忙。
温馨提示：答案为网友推荐，仅供参考
第1个回答 推荐于2017-09-29
should 用法讲与练
should 一词在中学英语课本中出现频率很高。它的用法灵活、含义丰富，因而一直是历年高考关注的热点。现将其具体用法分述如下：
一 . should 作为助动词 shall 的过去式，可以在间接引语中与第一人称主语搭配，表示过去将来时间。例如：
The group leader announced that we should （= would ） begin to work soon.
小组长宣布：我们不久就开始工作。
A week ago， I told him that I should （= would） go to Beijing the next day.
一个星期以前，我告诉他我第二天就去北京。
二 . should 作为情态动词，通常用来表示现在或将来的责任或义务，译作“应该”、“应当”，这时它可以和 ought to， be supposed to 互换使用。例如：
You should （= are supposed to ） complete your test in time.
你们应该按时做完你们的实验。
You should （= ought to ） tell your mother about it at once.
你应该立即把此事告诉你妈妈。
In sum， theory should be combined with practice.
总之，理论应该与实验相结合。
三 . should 作为情态动词，可以用在条件状语从句中，表示语气较强的假设，译作“万一”、“竟然”，这时也可将 should 置于从句之首，即将 should 放在主语前面，而省略从属连词 if .例如：
If you should fail to come， ask Mrs Chen to work in your place. （= Should you fail to come， ask Mrs Chen to work in your place. ） 万一你来不了，就叫陈夫人代替你。
If anyone should come， say I am not at home. （= Should anyone come， say I am not at home. ） 万一有人来访，就说我不在家。
If it should rain tomorrow， I wouldn't go. （= Should it rain tomorrow， I wouldn't go.）
万一明天天下雨，我就不去了。
四 . should 作为情态动词，可以表示谦逊、客气、委婉之意，译为“可……”、“倒……”。例如：
I should say that it would be better to try it again.
我倒是认为最好再试一试。
You are mistaken， I should say. 据我看，你搞错了。
He should expect their basketball team to win the match.
他倒是希望他们的篮球队赢得这场比赛的胜利。
Should you like some tea ？ 你可喜欢喝茶？
五 . should 作为情态动词，可以用来表示意外、惊喜或者在说话人看来是不可思议的。尤其在以 why， who， how 等开头的修辞疑问句或某些感叹句中常常译为“竟会”、“居然”。例如：
How should I know it ？ 我怎么会知道这件事？
Why should you be so late today ？ 你今天怎么来得这么晚？
When I went out， whom should I meet but my old friend Xiao Li ！ 当我出去时，想不到竟会碰见我的老朋友小李！
I don't see any reason why he shouldn't be happy.
我不明白为什么他居然不愉快。
六 . should 作为情态动词，可以用来表示有较大可能实现的猜测、推论，通常译为“可能”、“总该……吧”，相当于 be expected to .例如：
They should be home by now， I think. 我想现在他们总该到家了吧。
The report was written after a careful investigation， so it should be reliable.
这份报告是经过周密调查后才写成的，所以应该是可靠的。
七 . should 作为情态动词，用在由 so that， for fear that， lest 引导的目的状语从句和 in case （that） 引导的条件状语从句中，有“能够”、“可能”、“会”之意。例如：
They got up early so that they should （= could/ might） catch the first bus in time.
他们起得很早以便能及时赶上头班公交车。
He is working hared for fear that he should fall behind others.
他努力工作，唯恐落在别人后面。
We went over the document again and again lest we should miss any of the main points.
我们把文件看了一遍又一遍，唯恐忽略了其中的什么要点。
He took an umbrella in case （that） it should rain.
他带了一把雨伞，以防天下雨。
八 . should 作为情态动词，可以用于下列虚拟语气句中：
1. 用在表示与将来事实相反的条件状语从句中，构成“ If …… should （do sth）……， …… would/ could/ might （do sth.） …… ”句式。例如：
If it should （或 were to ） rain tomorrow， the sports meeting would be put off. （= Should it rain tomorrow/ Were it to rain tomorrow， the sports meeting would be put off.）
如果明天天下雨，运动会就会延期举行。
2. 用在 suggest （propose）， arrange， plan， decide，， advise， order， demand， request， desire， insist 等表示“建议”、“要求”、“命令”、“决定”、“安排”、“计划”、“主张”的动词后面接的宾语从句中。这里的 should 也可以省略。例如：
He suggested/ proposed/ demanded/ advised that they （should） read the rules carefully.
他建议 / 提议 / 要求 / 劝告他们要仔细阅读这些规则。
The doctor ordered that she （should） stay in bed for another week.
医生嘱咐她再卧床休息一个星期。
He insisted that we （should ）take up the matter at the meeting.
他坚持要我们在会上提出这个问题。
3. 用在“ It is desired/ suggested/ requested/ ordered/ proposed/ decided ”之后由 that 引导的主语从句中， should 也可以省略。例如：
It is requested that Miss Yang （should） give a performance at the party.
人们要求杨小姐在聚会上表演一个节目。
It has been arranged （planned） that they （should） leave the following week.
已经安排（计划）让他们下星期动身。
It has been decided that the meeting （should） be postponed till next Saturday.
已经决定会议推迟到下周六举行。
4. 用在 suggestion， motion， proposal， order， plan， idea， advice， request， decision， requiry 等名词后面接的表语从句或同位语从句中， should 也可以省略。例如：
We all agreed to his suggestion （proposal） that we （should） go to Nanjing for a visit.
我们都同意他提出的要我们到南京去游览的建议。（ should 用于同位语从句中）
My idea/ motion/ advice/ is that we （should） do more eye exercises every day.
我的意见是我们每天应该多做眼保健操。（ should
用于表语从句中）
5. 用在“ It is / was necessary/ important/ strange/ incredible ”或“ It is a pity/ a shame/ no wonder ”之后由 that 引导的主语从句中， should 有“应该”、“必须”、“竟然”、“居然”之意。例如：
It is necessary that he （should） be sent there at once. 有必要马上派他到那里去。
It is strange that the wheel should turn so slowly.
真奇怪，这个轮子竟然转动得如此之慢。
It is a great pity/ shame/ that he should be so conceited.
真遗憾，他竟会这样自高自大。
九 . “ should have + - ed 分词”结构用来表达下述意义：
1. 表示“应该已经……”，“本来应该……”，即过去该做某事但实际没有做，其否定式“ shouldn't have + - ed 分词”意为“本来不应该……”。例如：
These cells should have been kept in somedry places. 这些电池本来应该放（保存）在干燥的地方。（但实际上没有把它们放在干燥的地方。）
You shouldn't have dept those cells in the damp place. 你本来不该把那些电池放在潮湿的地方。（但实际上已经把它们放到潮湿的地方了。）
2. 表示“（估计）应该已经……”，“大概已经……”，即对过去情况的推测。例如：
They left at nine， so they should have arrived （= probably have arrived） home by now.
他们是九点钟走的，现在应该已经到家了。
They should have finished their work， for they began to do it so early.
他们很早就开始工作，现在大概已经干完了。
3. 意为“竟然已经……”，“居然已经……”，即表示说话人对已经出现的事态感到“惊奇、惊喜、怀疑”。例如：
I'm surprised that he should have been so foolish. 我很奇怪，他竟然会这么傻。
I'm amazed that Mr Harris should have said nothing about the matter.
这件事，哈里斯先生竟然只字未提，对此我大为惊异。
It is wonderful that you should have achieved so much these years.
这几年你竟然取得如此大的成就，你真了不起。
此外， should 还可以出现在“ should be doing sth ”或“ should have been doing sth ”等句式中，表示“应该正在……”或表示说话人的某种不满情绪。例如：
Why should we be sitting here doing nothing？ 我们干嘛坐在这里闲着？
You should be wearing a mask. 你应当戴着口罩。
She shouldn't be working like that. She is still so weak.
她不应当那样干。她身体还很虚弱。
You should have been waiting for us. Why haven't you？ 你应当等着我们的。怎么没有等？本回答被提问者采纳
should 一词在中学英语课本中出现频率很高。它的用法灵活、含义丰富，因而一直是历年高考关注的热点。现将其具体用法分述如下：
一 . should 作为助动词 shall 的过去式，可以在间接引语中与第一人称主语搭配，表示过去将来时间。例如：
The group leader announced that we should （= would ） begin to work soon.
小组长宣布：我们不久就开始工作。
A week ago， I told him that I should （= would） go to Beijing the next day.
一个星期以前，我告诉他我第二天就去北京。
二 . should 作为情态动词，通常用来表示现在或将来的责任或义务，译作“应该”、“应当”，这时它可以和 ought to， be supposed to 互换使用。例如：
You should （= are supposed to ） complete your test in time.
你们应该按时做完你们的实验。
You should （= ought to ） tell your mother about it at once.
你应该立即把此事告诉你妈妈。
In sum， theory should be combined with practice.
总之，理论应该与实验相结合。
三 . should 作为情态动词，可以用在条件状语从句中，表示语气较强的假设，译作“万一”、“竟然”，这时也可将 should 置于从句之首，即将 should 放在主语前面，而省略从属连词 if .例如：
If you should fail to come， ask Mrs Chen to work in your place. （= Should you fail to come， ask Mrs Chen to work in your place. ） 万一你来不了，就叫陈夫人代替你。
If anyone should come， say I am not at home. （= Should anyone come， say I am not at home. ） 万一有人来访，就说我不在家。
If it should rain tomorrow， I wouldn't go. （= Should it rain tomorrow， I wouldn't go.）
万一明天天下雨，我就不去了。
四 . should 作为情态动词，可以表示谦逊、客气、委婉之意，译为“可……”、“倒……”。例如：
I should say that it would be better to try it again.
我倒是认为最好再试一试。
You are mistaken， I should say. 据我看，你搞错了。
He should expect their basketball team to win the match.
他倒是希望他们的篮球队赢得这场比赛的胜利。
Should you like some tea ？ 你可喜欢喝茶？
五 . should 作为情态动词，可以用来表示意外、惊喜或者在说话人看来是不可思议的。尤其在以 why， who， how 等开头的修辞疑问句或某些感叹句中常常译为“竟会”、“居然”。例如：
How should I know it ？ 我怎么会知道这件事？
Why should you be so late today ？ 你今天怎么来得这么晚？
When I went out， whom should I meet but my old friend Xiao Li ！ 当我出去时，想不到竟会碰见我的老朋友小李！
I don't see any reason why he shouldn't be happy.
我不明白为什么他居然不愉快。
六 . should 作为情态动词，可以用来表示有较大可能实现的猜测、推论，通常译为“可能”、“总该……吧”，相当于 be expected to .例如：
They should be home by now， I think. 我想现在他们总该到家了吧。
The report was written after a careful investigation， so it should be reliable.
这份报告是经过周密调查后才写成的，所以应该是可靠的。
七 . should 作为情态动词，用在由 so that， for fear that， lest 引导的目的状语从句和 in case （that） 引导的条件状语从句中，有“能够”、“可能”、“会”之意。例如：
They got up early so that they should （= could/ might） catch the first bus in time.
他们起得很早以便能及时赶上头班公交车。
He is working hared for fear that he should fall behind others.
他努力工作，唯恐落在别人后面。
We went over the document again and again lest we should miss any of the main points.
我们把文件看了一遍又一遍，唯恐忽略了其中的什么要点。
He took an umbrella in case （that） it should rain.
他带了一把雨伞，以防天下雨。
八 . should 作为情态动词，可以用于下列虚拟语气句中：
1. 用在表示与将来事实相反的条件状语从句中，构成“ If …… should （do sth）……， …… would/ could/ might （do sth.） …… ”句式。例如：
If it should （或 were to ） rain tomorrow， the sports meeting would be put off. （= Should it rain tomorrow/ Were it to rain tomorrow， the sports meeting would be put off.）
如果明天天下雨，运动会就会延期举行。
2. 用在 suggest （propose）， arrange， plan， decide，， advise， order， demand， request， desire， insist 等表示“建议”、“要求”、“命令”、“决定”、“安排”、“计划”、“主张”的动词后面接的宾语从句中。这里的 should 也可以省略。例如：
He suggested/ proposed/ demanded/ advised that they （should） read the rules carefully.
他建议 / 提议 / 要求 / 劝告他们要仔细阅读这些规则。
The doctor ordered that she （should） stay in bed for another week.
医生嘱咐她再卧床休息一个星期。
He insisted that we （should ）take up the matter at the meeting.
他坚持要我们在会上提出这个问题。
3. 用在“ It is desired/ suggested/ requested/ ordered/ proposed/ decided ”之后由 that 引导的主语从句中， should 也可以省略。例如：
It is requested that Miss Yang （should） give a performance at the party.
人们要求杨小姐在聚会上表演一个节目。
It has been arranged （planned） that they （should） leave the following week.
已经安排（计划）让他们下星期动身。
It has been decided that the meeting （should） be postponed till next Saturday.
已经决定会议推迟到下周六举行。
4. 用在 suggestion， motion， proposal， order， plan， idea， advice， request， decision， requiry 等名词后面接的表语从句或同位语从句中， should 也可以省略。例如：
We all agreed to his suggestion （proposal） that we （should） go to Nanjing for a visit.
我们都同意他提出的要我们到南京去游览的建议。（ should 用于同位语从句中）
My idea/ motion/ advice/ is that we （should） do more eye exercises every day.
我的意见是我们每天应该多做眼保健操。（ should
用于表语从句中）
5. 用在“ It is / was necessary/ important/ strange/ incredible ”或“ It is a pity/ a shame/ no wonder ”之后由 that 引导的主语从句中， should 有“应该”、“必须”、“竟然”、“居然”之意。例如：
It is necessary that he （should） be sent there at once. 有必要马上派他到那里去。
It is strange that the wheel should turn so slowly.
真奇怪，这个轮子竟然转动得如此之慢。
It is a great pity/ shame/ that he should be so conceited.
真遗憾，他竟会这样自高自大。
九 . “ should have + - ed 分词”结构用来表达下述意义：
1. 表示“应该已经……”，“本来应该……”，即过去该做某事但实际没有做，其否定式“ shouldn't have + - ed 分词”意为“本来不应该……”。例如：
These cells should have been kept in somedry places. 这些电池本来应该放（保存）在干燥的地方。（但实际上没有把它们放在干燥的地方。）
You shouldn't have dept those cells in the damp place. 你本来不该把那些电池放在潮湿的地方。（但实际上已经把它们放到潮湿的地方了。）
2. 表示“（估计）应该已经……”，“大概已经……”，即对过去情况的推测。例如：
They left at nine， so they should have arrived （= probably have arrived） home by now.
他们是九点钟走的，现在应该已经到家了。
They should have finished their work， for they began to do it so early.
他们很早就开始工作，现在大概已经干完了。
3. 意为“竟然已经……”，“居然已经……”，即表示说话人对已经出现的事态感到“惊奇、惊喜、怀疑”。例如：
I'm surprised that he should have been so foolish. 我很奇怪，他竟然会这么傻。
I'm amazed that Mr Harris should have said nothing about the matter.
这件事，哈里斯先生竟然只字未提，对此我大为惊异。
It is wonderful that you should have achieved so much these years.
这几年你竟然取得如此大的成就，你真了不起。
此外， should 还可以出现在“ should be doing sth ”或“ should have been doing sth ”等句式中，表示“应该正在……”或表示说话人的某种不满情绪。例如：
Why should we be sitting here doing nothing？ 我们干嘛坐在这里闲着？
You should be wearing a mask. 你应当戴着口罩。
She shouldn't be working like that. She is still so weak.
她不应当那样干。她身体还很虚弱。
You should have been waiting for us. Why haven't you？ 你应当等着我们的。怎么没有等？本回答被提问者采纳
第2个回答 2008-06-17
should
v.aux.
(shall 的过去式)
[表示过去将来时; 常用于间接引语]将
[表示语气较强的假设]万一, 竟然
[用于第一人称时表示某种条件下会产生的结果; 用于第二、三人称时表示说话者的意愿]就, 该
[表示可能性、推测、推论]可能, 该
[表示义务、责任]应当, 应该
[表示委婉、谦逊]可, 倒
[用于表示必要、适当、惊奇、遗憾等的从句中]应该; 竟然会
[与why, who, how 等连用, 表示意外、惊异等] 竟会
[用于表示建议、命令、决定等的从句中]应该, 必须
[用于表示目的或由 lest 等引导的从句中]可以, 会; 万一
[用于让步状语从句中]即使
I told you I should be glad to do it. (=I told you, “I shall be glad to do it.”)
我告诉过你, 我是高兴去做的。
If I should fail I would try again.
万一失败, 我还要试一试。
If you [he] had much money, you [he] should buy it.
如果你[他]有许多钱, 你[他]就该把它买下来。
They should have arrived in Beijing by this time.
他们这个时候该到北京了。
You shouldn't be so careless.
你不应该这样粗心大意。
I should hardly think so.
我倒并不那样想。
It is simply a miracle that rice should grow in such a place.
稻子竟能在这样的地方生长, 这实在是个奇迹。
How should I know?
我怎么会知道呢?
It was proposed that we should act at once.
有人提议我们必须立刻行动。
I'll remind him lest he should forget it.
怕他忘记, 我会提醒他的。
I stayed in lest I should catch cold.
我怕伤风, 所以呆在屋里。
S-he fail, he would try again.
万一失败了, 他会再试一试的。
现代英汉词典should
v.aux.
否定式缩略为 shouldn't
（用于间接引语，表示）将
We said we shouldn't arrive till 6.
我们说过我们六点才能到。
"If it should rain tomorrow, the sports meeting would be postponed."
"要是明天下雨,比赛就延期举行。"
（和that一起用于表示意愿的动词和形容词之后）
He was keen that she should go to college.
他渴望她能上大学。
（在条件句中与第一人称连用） 可能；会
I should have bought it if I had enough money.
如果当时我有足够的钱，我会把它买下来的。
（表示责任或义务）必须，应该
Children should obey their parents.
儿童应该服从他们的父母。
He should have known that the police would never allow this sort of thing.
他本应知道这样的事情警察是决不允许的。
（表示可能之事）可 能
It should be fine tomorrow.
明天可能天晴。
（表示不确定）万一
If I should see him, I'll tell him.
万一我见到他，我就告诉他。
简明英汉词典should
v.
aux.应该, 将要
v.aux.
(shall 的过去式)
[表示过去将来时; 常用于间接引语]将
[表示语气较强的假设]万一, 竟然
[用于第一人称时表示某种条件下会产生的结果; 用于第二、三人称时表示说话者的意愿]就, 该
[表示可能性、推测、推论]可能, 该
[表示义务、责任]应当, 应该
[表示委婉、谦逊]可, 倒
[用于表示必要、适当、惊奇、遗憾等的从句中]应该; 竟然会
[与why, who, how 等连用, 表示意外、惊异等] 竟会
[用于表示建议、命令、决定等的从句中]应该, 必须
[用于表示目的或由 lest 等引导的从句中]可以, 会; 万一
[用于让步状语从句中]即使
I told you I should be glad to do it. (=I told you, “I shall be glad to do it.”)
我告诉过你, 我是高兴去做的。
If I should fail I would try again.
万一失败, 我还要试一试。
If you [he] had much money, you [he] should buy it.
如果你[他]有许多钱, 你[他]就该把它买下来。
They should have arrived in Beijing by this time.
他们这个时候该到北京了。
You shouldn't be so careless.
你不应该这样粗心大意。
I should hardly think so.
我倒并不那样想。
It is simply a miracle that rice should grow in such a place.
稻子竟能在这样的地方生长, 这实在是个奇迹。
How should I know?
我怎么会知道呢?
It was proposed that we should act at once.
有人提议我们必须立刻行动。
I'll remind him lest he should forget it.
怕他忘记, 我会提醒他的。
I stayed in lest I should catch cold.
我怕伤风, 所以呆在屋里。
S-he fail, he would try again.
万一失败了, 他会再试一试的。
现代英汉词典should
v.aux.
否定式缩略为 shouldn't
（用于间接引语，表示）将
We said we shouldn't arrive till 6.
我们说过我们六点才能到。
"If it should rain tomorrow, the sports meeting would be postponed."
"要是明天下雨,比赛就延期举行。"
（和that一起用于表示意愿的动词和形容词之后）
He was keen that she should go to college.
他渴望她能上大学。
（在条件句中与第一人称连用） 可能；会
I should have bought it if I had enough money.
如果当时我有足够的钱，我会把它买下来的。
（表示责任或义务）必须，应该
Children should obey their parents.
儿童应该服从他们的父母。
He should have known that the police would never allow this sort of thing.
他本应知道这样的事情警察是决不允许的。
（表示可能之事）可 能
It should be fine tomorrow.
明天可能天晴。
（表示不确定）万一
If I should see him, I'll tell him.
万一我见到他，我就告诉他。
简明英汉词典should
v.
aux.应该, 将要
第3个回答 推荐于2017-10-02
should modal verb (negative should not, short form shouldn't )
1
used to show what is right, appropriate, etc., esp. when criticizing sb's actions
（常用於纠正别人）应该，应当 ：
You shouldn't drink and drive. 你不该酒後驾车。
He should have been more careful. 他应当更小心点儿才是。
2
used for giving or asking for advice （提出或徵询建议）该，可以 ：
You should stop worrying about it. 你该不要再为此事担忧了。
Should I call him and apologize? 我是不是应该打电话向他道歉？
I should wait a little longer, if I were you. 假如我是你的话，我会再等一会儿。
'She doesn't think she'll get a job.' 'She should worry, with all her qualifications
(= she does not need to worry).'
"她担心找不到工作。" "她那麼好的条件，可真该担心的。"
3
used to say that
you expect sth is true or will happen （表示预期）应该会，可能
： We should arrive before dark. 我们天黑以前应该能赶到。
I should have finished the book by Friday. 到星期五我应该能读完那本书。
The roads should be less crowded today. 今天路上该不那麼拥挤了吧。
4
used to say that sth that was expected has not happened （表示与预期相反）
本应，本当 .
It should be snowing now, according to the weather forecast.
按天气预报，现在该下雪才是。
The bus should have arrived ten minutes ago. 公共汽车十分钟以前就该到了。
5
(BrE, formal) used after I or we instead of would
for describing what you would do if sth else happened first （与 I 或 we 连用代替 would，表示虚拟结果）就将.
If I were asked to work on Sundays, I should resign.
要是叫我星期天加班，我就辞职不干了。
6
(formal) used to refer to
a possible event or situation （表示可能）假如，万一
If you should change your mind, do let me know.
假如你改变主意的话，一定要告诉我。
In case you should need any help, here's my number.
万一你需要帮助的话，这是我的电话号码。
Should anyone call (= if anyone calls), please tell them I'm busy.
如果有人打电话来，请告诉他我正忙着。
7
used as the past form of shall when reporting what sb has said
（在间接引语中用作 shall 的过去时） .
He asked me what time he should come. (= His words were: 'What time shall I come?') 他问我他应该什麼时候来。
(BrE, formal)
I said (that) I should be glad to help. 我说我乐意帮忙。
8
(BrE)
used after that when sth is suggested or arranged （用於 that 引导的、表示建议或安排的从句中） .
She recommended that I should take some time off. 她建议我应该休息一段时间。
In order that training should be effective it must be planned systematically.
为使培训有成效，必须有系统的计划。
In both NAmE and BrE this idea can be expressed without 'should': She recommended that I take some time off.
In order that training be effective... 在北美英语和英国英语中，表达这一意思均可省掉 should：She recommended that I take some time off.
In order that training be effective ...
9
used after that after many adjectives that describe feelings （用於许多表示感情的形容词後的 that 从句中）.
I'm anxious that we should allow plenty of time.
我殷切希望我们能留出充裕的时间。
I find it astonishing that he should be so rude to you.
他竟然对你这样无礼，真叫我吃惊。
10
(BrE, formal) used with I and
we in polite requests （与 I 和 we 连用，表示客气地请求） .
I should like to call my lawyer. 我希望给我的律师打个电话。
We should be grateful for your help. 对您的帮助我会非常感激。
11
used with I and we to give opinions that you are not certain about
（与 I 和 we 连用，表示没有把握） .
I should imagine it will take about three hours. 我想得用差不多三个小时吧。
'Is this enough food for everyone?' ' I should think so.'
"这些食物够所有人吃吗？" "我觉得够了吧。"
'Will it matter?' ' I shouldn't think
so.' "这有关系吗？" "不会吧。"
12
used for expressing strong agreement （表示十分赞同） .
'I know it's expensive but it will last for years.' ' I should hope so too! '
"我知道价钱贵，但能用好多年。" "我也是这麼想的！"
'Nobody will oppose it.' ' I should think not! ' "谁也不会反对的。" "我想也是！"
13
why, how, who, what ~ sb/ sth do used to refuse sth or to show
that you are annoyed at a request; used to express surprise about an event or a
situation （表示拒绝、恼怒或惊奇） .
Why should I help him? He's never done anything for me.
我干吗要帮他呢？他从来没为我做过什麼。
How should I know where you've left your bag?
我怎麼知道你把包丢在哪儿了？
I got on the bus and who should be sitting in front of me but Tony!
我上了公共汽车，没想到坐在我前面的竟然是托尼！
14
used to tell sbthat sth would amuse or surprise them if they saw or experienced it
（表示假如对方看见或经历某事物，一定会感兴趣或吃惊）真该，真应当 ： You should have seen her face when she found out!
你真该看看她发现事情真相时脸上的表情！
1
used to show what is right, appropriate, etc., esp. when criticizing sb's actions
（常用於纠正别人）应该，应当 ：
You shouldn't drink and drive. 你不该酒後驾车。
He should have been more careful. 他应当更小心点儿才是。
2
used for giving or asking for advice （提出或徵询建议）该，可以 ：
You should stop worrying about it. 你该不要再为此事担忧了。
Should I call him and apologize? 我是不是应该打电话向他道歉？
I should wait a little longer, if I were you. 假如我是你的话，我会再等一会儿。
'She doesn't think she'll get a job.' 'She should worry, with all her qualifications
(= she does not need to worry).'
"她担心找不到工作。" "她那麼好的条件，可真该担心的。"
3
used to say that
you expect sth is true or will happen （表示预期）应该会，可能
： We should arrive before dark. 我们天黑以前应该能赶到。
I should have finished the book by Friday. 到星期五我应该能读完那本书。
The roads should be less crowded today. 今天路上该不那麼拥挤了吧。
4
used to say that sth that was expected has not happened （表示与预期相反）
本应，本当 .
It should be snowing now, according to the weather forecast.
按天气预报，现在该下雪才是。
The bus should have arrived ten minutes ago. 公共汽车十分钟以前就该到了。
5
(BrE, formal) used after I or we instead of would
for describing what you would do if sth else happened first （与 I 或 we 连用代替 would，表示虚拟结果）就将.
If I were asked to work on Sundays, I should resign.
要是叫我星期天加班，我就辞职不干了。
6
(formal) used to refer to
a possible event or situation （表示可能）假如，万一
If you should change your mind, do let me know.
假如你改变主意的话，一定要告诉我。
In case you should need any help, here's my number.
万一你需要帮助的话，这是我的电话号码。
Should anyone call (= if anyone calls), please tell them I'm busy.
如果有人打电话来，请告诉他我正忙着。
7
used as the past form of shall when reporting what sb has said
（在间接引语中用作 shall 的过去时） .
He asked me what time he should come. (= His words were: 'What time shall I come?') 他问我他应该什麼时候来。
(BrE, formal)
I said (that) I should be glad to help. 我说我乐意帮忙。
8
(BrE)
used after that when sth is suggested or arranged （用於 that 引导的、表示建议或安排的从句中） .
She recommended that I should take some time off. 她建议我应该休息一段时间。
In order that training should be effective it must be planned systematically.
为使培训有成效，必须有系统的计划。
In both NAmE and BrE this idea can be expressed without 'should': She recommended that I take some time off.
In order that training be effective... 在北美英语和英国英语中，表达这一意思均可省掉 should：She recommended that I take some time off.
In order that training be effective ...
9
used after that after many adjectives that describe feelings （用於许多表示感情的形容词後的 that 从句中）.
I'm anxious that we should allow plenty of time.
我殷切希望我们能留出充裕的时间。
I find it astonishing that he should be so rude to you.
他竟然对你这样无礼，真叫我吃惊。
10
(BrE, formal) used with I and
we in polite requests （与 I 和 we 连用，表示客气地请求） .
I should like to call my lawyer. 我希望给我的律师打个电话。
We should be grateful for your help. 对您的帮助我会非常感激。
11
used with I and we to give opinions that you are not certain about
（与 I 和 we 连用，表示没有把握） .
I should imagine it will take about three hours. 我想得用差不多三个小时吧。
'Is this enough food for everyone?' ' I should think so.'
"这些食物够所有人吃吗？" "我觉得够了吧。"
'Will it matter?' ' I shouldn't think
so.' "这有关系吗？" "不会吧。"
12
used for expressing strong agreement （表示十分赞同） .
'I know it's expensive but it will last for years.' ' I should hope so too! '
"我知道价钱贵，但能用好多年。" "我也是这麼想的！"
'Nobody will oppose it.' ' I should think not! ' "谁也不会反对的。" "我想也是！"
13
why, how, who, what ~ sb/ sth do used to refuse sth or to show
that you are annoyed at a request; used to express surprise about an event or a
situation （表示拒绝、恼怒或惊奇） .
Why should I help him? He's never done anything for me.
我干吗要帮他呢？他从来没为我做过什麼。
How should I know where you've left your bag?
我怎麼知道你把包丢在哪儿了？
I got on the bus and who should be sitting in front of me but Tony!
我上了公共汽车，没想到坐在我前面的竟然是托尼！
14
used to tell sbthat sth would amuse or surprise them if they saw or experienced it
（表示假如对方看见或经历某事物，一定会感兴趣或吃惊）真该，真应当 ： You should have seen her face when she found out!
你真该看看她发现事情真相时脸上的表情！
第4个回答 2015-05-15
（1）表“劝告、建议”时，可译成“应该”，这时可用ought to替换。
You should keep your promise.你应该遵守诺言。
（2）表示委婉陈述自己的意见。
I should think you are right.我想你是对的。
（3）表示惊异赞叹、忧虑、惋惜、欢欣、不满等情绪。
Why should you think so?你为何这样想呢？（不满）
（4）表推测
意为“可能，该”，表示对现在情况、将来情况的推测。
They should be home by now.他们现在应当到家了。
（5）“should+完成时”，在肯定句中，表示应完成而实际未完成的事情；如果用在否定句 中，则表示发生了不应当发生的事件。
You should have stopped at the red light.你见了红灯本应该停车。（未停）
You should not have gone back to work without the doctor's permission.你未经 医生许可不应该回去工作的。（回去了）
You should keep your promise.你应该遵守诺言。
（2）表示委婉陈述自己的意见。
I should think you are right.我想你是对的。
（3）表示惊异赞叹、忧虑、惋惜、欢欣、不满等情绪。
Why should you think so?你为何这样想呢？（不满）
（4）表推测
意为“可能，该”，表示对现在情况、将来情况的推测。
They should be home by now.他们现在应当到家了。
（5）“should+完成时”，在肯定句中，表示应完成而实际未完成的事情；如果用在否定句 中，则表示发生了不应当发生的事件。
You should have stopped at the red light.你见了红灯本应该停车。（未停）
You should not have gone back to work without the doctor's permission.你未经 医生许可不应该回去工作的。（回去了）
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