第1个回答 2009-09-30
主动形式表被动意义：
1. 系动词 look sound feel smell taste appear seem prove become get
the steel feels cold
his plan proved (to be ) practical
2.表示预祝的某种属性特征的动词 read write act cut draw sell wash wear open
Nylon cleans easily 尼龙容易洗干净
teh coat dries easily 这种外衣容易干
在英语学习中，有许多地方用主动表被动，这对许多中国学生来说是一个难点，常常让他们感到不好学，不好掌握，在此小结一下
1、 Need, want, require（要求，需要）, deserve(应得，值得), be worth值得），not bear(经不住) 后面接doing主动表被动。
The book is worth reading. 这本书值得一读。
The old building requires repairing. 这座古建筑需要修了。
These young seedlings will require/need looking after (=need to be looked after) carefully.�这些幼苗将需要小心的照管。
Your hair wants/needs cutting (needs to be cut).�你的头发该剪了。�
2、不定式作定语，放在被修饰词后面，与前面被修饰的名词或代词有动宾关系，又在句子中与另一名词或代词有主谓关系，不定式要用主动表被动含义。
I have much work to do. 我有许多要做的事情。（与work有动宾关系，与I有主谓关系）
Tom is looking for a room to live in. Tom在找一间住的房间。（与room有动宾关系，与Tom 有主谓关系）
He has a family to support.�他要维持一个家庭。（与family有动宾关系，与he有主谓关系）
3、不定式修饰作表语和宾语补足语的形容词时，结构：主语+系动词+形容词 + 不定式； 动词+宾语+形容词+不定式。如果形容词是表示难易、利弊等含义，如
difficult, easy, comfortable(舒适的), convenient（便利的，方便的), hard, cheap, expensive, 等，不定式用主动表被动。
The question is difficult to answer. 这个问题很难回答。
The work is easy to do. 这项工作很好做。
I found the car comfortable to ride in. 我觉得这种车很好坐。
That makes poetry difficult to write. 那就使得诗很难写。
4、在be to结构中的一些不定式:这种结构中的不定式通常应用主动表被动。下列动词用不定式的主动形式表示被动意义:�
Who is to blame for starting the fire?�
这场火灾应由谁负责?�
You are to blame for the accident. 你应为这事受动责备。
The house is to let.此房出租。�
A lot remains to do.还剩下许多事情要做。�
5、系动词没有被动形式,但有些系动词常表示被动意义。常见的有taste(吃起来), sound (听起来), prove(证明是), feel(摸上去感到), look(看起来)，smell(闻起来)等,例如:�
Your reason sounds reasonable.�
你的理由听起来很合理。�
Good medicine tastes bitter to the mouth.�良药苦口。�
6、一些与can''t(不能)或won''t(不会)连用的动词。常用的有: lock(锁住), shut(关上) , open(打开), act(上演), write(写)，cut(砍，切)，wear(穿，戴)等,用作不及物动词时，用主动表被动。例如:�
The door won''t open.这门打不开。�
It can''t move.它不能动。�
7、一些动词如sell(销售) , wash(洗), clean(打扫), burn(燃烧), cook(煮)等与副词如well(好), easily(容易地), perfectly(十分地)等连用 ,描会事物的特性，用主动表被动，结构是主语+动词+加副词。例如:�
The book sells well.�这种书很畅销。�
These clothes wash easily.�这些衣服很易洗。�
The pen writes well. 这笔很好写。
8、主语much, a great deal, little, what等，其表语如是不定式，则用不定式的主动表被动。
What is to do? 做什么？
Much is to do. 太多要做的事。
9、在“there be”句型中作主语的定语如果现在分词时，所用的现在分词要用主动表被动意义。
There is nothing doing these days. 这些天没事干。
I see there’s a good idea planning. 我知道又在打好主意。
Exercises: choose the best choice.
1. There are many good films played by ChengLong that are worth _____.
A. to be seen B. being seen C. seeing D. to see
2. The food _____ easily and sells _____.
A. cooks ; well B. is cooking; good C. is cooked; well D. cooked; good
3. The windows of the building can’t _____.,
A. be closed B. close C. be closing D. closed
Key: 1-3 CAB本回答被提问者采纳