建议你多看英语电影
有利于你的口语和提高语感
你的问题 TO有几种情况有固定搭配比如have to
有接目的的比如 I WANT TO GO HOME
主动形式 被动形式
一般式 (not) to do(not) to be done
进行式 (not) to be doing无被动
完成式 (not) to have done ( not) to have been done
用法
一般现在时的用法
1)表示经常性,习惯性的动作;表示现在的状态,特征 和真理。句中常用often, usually, every day等时间状语,例如:
He goes to school every day. (经常性动作)
He is very happy.(现在的状态)
The earth moves around the sun. (真理)
2)在时间状语从句和条件状语从句中,用现在时表示将来,例如:
If you come this afternoon, we’ll have a meeting.
When I graduate, I’ll go to the countryside.
Don’t get off the bus until it has stopped.
3)有时这个时态表示按计划,规定要发生的动作。(句中都带有时间状语词)但仅限于少数动词,如:begin come, leave, go, arrive, start, stop, return, open, close等,例如:
The meeting begins at seven.
The train starts at nine in the morning.
4)表示状态和感觉的动词。如be, like, hate, think, remember, find, sound等常用一般现在时。例如:
I like English very much.
The story sounds interesting.
5)书报的标题,小说等情节介绍常用一般现在时。
2. 一般过去时的用法
1)表示过去某时发生的事,存在的状态或过去反复发生的动作。
He saw Mr.Wang yesterday.
He worked in a factory in 1986.
2)表示过去经常发生的动作,也可用“used to”和“would+动词原形”。例如:
I used to smoke.
During the vacation I would swim in the sea.
注意:used to表示过去常发生而现在不发生的动作或 存在的状态。另外“be used to+名词(动名词)”表示 “习惯于…… ”。例如:
I am used to the climate here.
He is used to swimming in winter.
3. 一般将来时的用法
一般将来时表示将来的动作或状态,其表达形式除了“will或shall+动词原形”外,还有以下几种形式。
1)“to be going to+动词原形”, 表示即将发生的或最近打算进行的事。例如:
It is going to rain.
We are going to have a meeting today.
2)go, come, start, move, sail, leave等可用进行时态表示按计划即将发生的动作。例如:
I’m leaving for Beijing.
3)be to+动词原形”表示按计划要发生的事或征求对方意见。例如:
Are we to go on with this work?
The boy is to go to school tomorrow.
4)“be about to+动词原形”表示即将发生的动作。例如:
We are about to leave.
4. 现在进行时的用法
1)现在进行时表示现在正在进行的动作,由“to be+现在分词”构成。例如:
What are you doing?
2)表示感觉,愿望和状态的某些动词,如have, be, hear, see, like等词一般不用进行时。
5. 过去进行时的用法
1)过去进行时表示过去某一时刻,某一阶段正进行的动作,由“was (were)+现在分词”构成。例如:
In 1980 he was studying in a university.
He was reading a novel when I came in.
6. 现在完成时的用法
现在完成时由“have+过去分词”构成。其使用有两种情况:
1)现在完成时所表示的动作在说话之前已完成,而对现在有影响。句中没有明显时间状语。例如:
He has gone to Fuyang . (说话人认为他不在该地)
He has been to Fuyang. (说话人认为他在该地)
)现在完成时所表示的动作开始于过去,持续到现在,也许还会持续下去。常用for和since表示一段时间的状语或so far, now, today, this week (month, year)等表示包括现在时间在内的状语。例如:
He has studied English for 5 years.
He has studied English since 1985.
Now I have finished the work.
注意:表示短暂时间动作的词,如:come, go, die, marry, buy等的完成时不能与for, since等表示一段时间的词连用。
3)现在完成时还可用在时间和条件状语从句中,表示将来某时完成的动作。例如:
I’ll go to your home when I have finished my homework.
If it has stopped snowing in the morning, we will go to the park.
7. 过去完成时的用法
)过去完成时由“had+过去分词” 构成,过去完成时的动作表示过去某一时刻或某一动作之前完成的动作状态。句中常用by, before, until, when等词引导的时间状语。例如:
By the end of last year we had built five new houses.
I had learnt 5000 words before I entered the university.
2)过去完成时的动词还可表示过去某一时刻之前发生的动作或状态持续到过去某个时间或持续下去。例如:
Before he slept, he had worked for 12 hours.
8)过去将来时的用法
过去将来时表示从过去的某时间看将要发生的动作或状态。过去将来时由“should或would+动词原形”构成。第一人称用should,其他人称用would.例如:
They were sure that they would succeed.
9)现在完成进行时的用法
现在完成进行时由“have (has)+been+现在分词”构成,表示现在以前一直在进行的动作。有些词,如work, study, live, teach等用现在完成进行时与用现在完成时意思差不多。例如:
I have worked here for three years.
I have been working here for three years.
但多数动词在这两种时态中表示不同意思。例如:
I have written a letter(已写完)
I have been writing a letter(还在写)
注意:表示短暂动作的动词,如finish, marry, get up, come go等不能用这种时态
宾语从句
在句子中起宾语作用的从句叫做宾语从句.宾语从句分为三类:动词的宾语从句,介词的宾语从句和形容词的宾语从句.
1.宾语从句的连接词
从属连词
连接宾语从句的从属连词主要有that,if,whether.
that引导表示陈述句的宾语从句,而if和whether引导表示“是否”的宾语从句.
He told that he would go to the college the next year
他告诉我他下一年上大学.
I don’t know if there will be a bus any more.
我不知道是否还会有公交车.
Nobody knew whether he could pass the exam.
没人知道他是否会通过考试.
连接代词
连接代词主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等.
连接代词一般指疑问,但what, whatever除了指疑问外,也可以指陈述.
Do you know who has won Red Alert game?
你知道谁赢了这一局红警游戏吗?
I don’t know whom you should depend on.
我不知道你该依靠谁.
The book will show you what the best CEOs know.
这本书会告诉你最好的执行总裁该了解些什么.
Have you determined whichever you should buy,a Motorola or Nokia cell phone?
你决定好是买诺基亚还是摩托罗拉的电话了吗?
连接副词
连接副词主要有when,where,why,how,whenever,wherever,however等.
He didn’t tell me when we should meet again.
他没有告诉我什么时候我们能再见面.
Could you please tell me how you read the new panel?
你能展示给我怎么用这个新的操作盘吗?
None of us knows where these new parts can be bought.
没有人知道这些的新的零件能在哪里买到.
2.动词的宾语从句
大多数动词都可以带宾语从句
We all expect that they will win , for members of their team are stronger.
我们都预料他们会赢,因为他们的队员更强壮.
He told us that they would help us though the whole work.
他告诉我们在整个工作中,他都会帮忙的.
部分“动词+副词”结构也可以带宾语从句
I have found out that all the tickets for the concert have been sold out.
我发现这场音乐会的所有票都买光了.
Can you work out how much we will spend during the trip?
你能计算出这次旅行我们将花费多少钱吗?
动词短语也可以带宾语从句
常见的这些词有:
make sure确保 make up one’s mind下决心 keep in mind牢记
Make sure that there are no mistakes in your papers before you turn them in.
在上交试卷前确保没有任何错误.
可运用形式宾语it代替的宾语从句
①动词find,feel,consider,make,believe等后面有宾语补足语的时候,则需要用it做形式宾语而将that宾语从句后置.
I think it necessary that we take plenty of hot water every day .
我认为每天多喝开水是有必要的.
I feel it a pity that I haven’t been to the get-together.
我没去聚会,感觉非常遗憾.
I have made it a rule that I keep diaries.
我每天写日记成了习惯.
We all find it important that we (should) make a quick decision about this mater.
我们都认为对这件事马上做出决定很重要.
②有些动词带宾语从句时寻要在宾语与从句前加it
这类动词主要有:hate, take , owe, have, see to.
I hate it when they with their mouths full of food.
我讨厌他们满嘴食物时说话.
He will have it that our plan is really practical.
他会认为我们的计划确实可行.
I take it that you will agree with us.
我们认为你会同意我们的.
When you start the engine, you must see to it that car is in neutral.
开启发动机时, 一定要使汽车的离合器处于空挡位置.
③若宾语从句是wh-类,则不可用it代替
We all consider what you said to be unbelievable.
我们都认为你所说的是不可信的.
We discovered what we had learned to be valuable.
我们发现我们所学到的东西都是有用的.
3.介词的宾语从句
用wh-类的介词宾语从句
We are talking about whether we admit students into our club.
我们正在讨论是否让学生加入我们的俱乐部.
The new book is about how Shenzhou 6 manned spaceship was sent up into space.
这本新书是关于神州6号载人航天飞船是如何升如太空的.
用that,if引导的介词宾语从句
有时候except,but,besides三个介词后可见到that引导的宾语从句
I know nothing about my new neighbor except that he used to work with a company.
对于我的新邻居我只知道他曾在一家公司上班,其他一无所知.
4.形容词的宾语从句
常用来引导宾语从句的形容词有: sure,certain,glad,please,happy,sorry,afraid,satisfied,surprised
I am sure I will pass the exam.
我确信我会通过考试.
I am sorry that I have troubled you so long.
很抱歉我这么长时间在打扰你.
He is glad that Li Ming went to see him when he was ill.
他很高兴在他生病的时候李明能去看望他.
5.if,wheter在宾语从句中的区别
①if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后,介词后一般不用if
②少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether.
③whether后可以加or not,但是if不可以.
④在不定式前只能用whether.
⑤避免歧异时,我们常用whether而不用if.
6.哪些宾语从句不可以省略引导词that
当that作learn,suggest,explain,agree,wonder,prove,mean,state,feel,hold等动词的宾语时;
当宾语从句较长时;
当主语状语置于主句尾,宾语从句之前时;
当主语谓语动词(包括非谓语动词)与宾语从句之间有插入语时;
当一个动词带有两个或两个以上宾语从句时,此时第一个that可以省略,第二个that不可以省略;
当宾语从句中的主语是this,that或this,that做主语的定语时;
当宾语从句是双宾语中的直接宾语时;
当宾语从句的主语是非谓语动词或主语从句时;
当主语中的谓语动词是固定词组时;
当宾语从句有it做其先行词时;
在直接引语中,转述分句把宾语从句隔开时.
7.宾语从句的否定转移
主句是谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.
I don’t think he will come to my party.而不能说成I think he won’t come to my party.
我认为他不会来我的舞会.
I don’t believe that man is killed by Jim,is he?
我认为那个人不是Jim所杀的,是不是?
如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式.
We find that he never listens to the teacher carefully,does he?
我们发现他从来不仔细听老师讲课,是不是?
8.宾语从句的时态和语序
当主句为现在时或将来时的时候,宾语从句的时候一般不受主句的时态所影响.
当主句为过去时的时候
①从句用一般过去时或过去进行时表示与主句谓语动词动作同时发生
I only knew he was studying in a western country,but I didn’t know what country he was in.
我只知道他当时在西方的一个国家读书,可不知道是哪个国家.
He asked me if I was reading the story The Old Man and the Sea when he was in.
他问我他进来的时候我是否在读<老人与海>.
②从句过去完成时表示该动作发生在主句谓语动作之前
He told me that he had told Mary about the meeting already.
他告诉我他已经把有关会议的事情告诉的了Mary.
③从句谓语用过去将来时表示该动作发生在主句谓语动作之后
The reporter asked if the government would take necessary measures to put down the to-do.
记者问政府是否会采取必要的措施镇压骚乱.
如果从句是一个客观真理,那么从句的时候不根据主句的时态而变化
The teacher said that the moon goes around the earth yesterday.
老师昨天说月亮绕着地球转.
当宾语从句的引导词是who,which,what,when,where,how,why等表疑问时,不能按正常语序安排,经常将这类引导词置于句首
Who do you think the public might choose as their favorite singer this year?
你认为今年公众会选谁为他们最喜欢的歌手.
宾语从句,即:在主句中担当宾语的从句。学习宾语从句要抓住三要素:连接词、语序和时态。
连接词一般都是that(指事务或人),which(指事),who(指人)
1.从句为陈述句,常选择连接词that或将that省略,直接与主句相连。
2.从句为一般疑问句,常选择连接词if或whether。在whether…ornot结构中不能用if替换。
3.从句为特殊疑问句,常选择what,when,where,which,who,how等的疑问代、副词作连接词。
注意:当who为主语时,句式为:who+谓语+其他三:判断时态情况:
1。主句是一般现在时,从句为各种时态情况
2。主句是一般过去时,从句为各种相应过去时态注意:从句描绘客观事实,用一般现在时
比较级
一般单音节词和少数以-er,-ow结尾的双音节词,比较级在后面加-er,最高级在后面加-est;
最后建议你先培养学习的兴趣再学会更轻松
谢谢
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