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it作形式主语和形式宾语讲解与练习

本帖最后由 越来越好的人生 于 2017-4-29 09:14 编辑

形式主语和形式宾语讲解与练习
形式主语或形式宾语指的是:当不定式(短语)、动名词(短语)或从句在某个句子中作主语或宾语时,为保持句子结构前后平衡,避免头重脚轻,因此常用it作形式主语或形式宾语置于句首或句中动词之后,而将真正的主语放在句尾。此时it只起先行引导作用,本身无词义。主要有:
    一、it作形式主语
    It 作形式主语的常见句型:
    ① It + be + 形容词 + to do sth. / doing / that ….
    e.g. It is very important to learn a foreign language. (学一门外语非常重要。)
    It is useless crying over the spilt milk. (覆水难收。)
② It + be +名词词组 + doing / that ….
    e.g. It is no good telling lies. (撒谎没好处。)
    It is a pity that you didn’t go to see the film yesterday.
    (你昨天没看成那部电影真遗憾。)
   ③ It + be + 过去分词 + that ….
    该句型常见动词有:say, hope, think, suppose, expect, report, know, believe, decide, etc.
    e.g. It is said that they have invented a new type of computer.
    (据说他们发明了一种新型电脑。)
    It is believed that China will become one of the strongest countries in the world.
    (大家都相信中国将会步入世界强国之列。)
④ It + seems / appears / happens等不及物动词+ that ….
    e.g. It seems that he enjoys pop songs very much. (似乎他非常喜欢流行歌曲。)
   ⑤ 若句子是疑问形式,就只能用it作形式主语。
    e.g. Does it matter much that they won’t come tomorrow?
    (他们明天不来很重要吗?)
⑥ It + takes + (sb.) + some time + to do sth.
    这是一个表示“(某人)花多少时间干某事的句型,其中it是形式主语,代替后面的不定式(to do sth.),句型中的sb.也可以省略。
    e.g. It took me some time to read the reading materials.
    (我花了一些时间才读完那段阅读材料。)
    It took him fourteen hours to go to New Zealand from Shanghai by plane.
    (从上海乘飞机去新西兰花了他14小时。)
  . it作形式宾语
    在句中,通常会在宾语补足语前使用形式宾语it,而将真正的宾语移至句末,其基本结构为动词+it+宾语补足语+不定式(动名词或从句)”
    I find it difficult to do the job well. 我发现做好这件事不容易。
    I think it best that you should stay here. 我认为你最好住这儿。
通常意义的形式宾语其真正宾语为不定式、动名词、从句等且其后跟有宾语补足语时的情形,即用于动词+it+宾语补足语+真正的宾语这样的结构,但以下几类形式宾语却比较特殊,其后没有宾语补足语。
    ① 当不定式(短语)、动名词(短语)或从句在复合宾语结构中作某些动词的宾语时 (think, make, find, consider, feel, suppose)
    e.g. They found it pleasant that they worked with us Chinese.
    (他们发现与我们中国人一起工作很愉快。)
    I think it no need talking about it with them.
    (我认为没必要跟他们谈。)
    ② 某些表示喜、怒、哀、乐的动词,如like, enjoy, love, hate等,往往不能直接接宾语从句;
    e.g. I don’t like it that he’s so lazy. (我不喜欢他那么懒惰。)
③ that引导的宾语从句不能直接作介词的宾语;
    e.g. You may depend on it that we shall always help you.
    (尽管放心,我们会随时帮你的。)
    Would you see to it that she gets home early? (你负责保证她早到家,好吗?)
  ④ 由及物动词与介词组成的固定搭配中,宾语从句若作该动词的宾语时,须借用it
    e.g. I leave it to your own judgement whether you should do it.
    (我让你自己判断这事是否该做。)
. 形式主语、形式宾语专项练习
1. It's easier _____ than ________.
    A. say, do   B. to say, to do  C. says, does  D. saying, doing
2. It takes me 30 minutes ________ to school by bike every day.
    A. going    B. to go     C. goes      D. go
3. It’s not easy ________ us _________ a foreign language.
    A. for; learning    B. of; learning    C. of; to learn   D. for; to learn
4. Children find___ interesting to play computer games.
    A. that     B. which       C. it      D. it’s
5. Do you think it important _____ computer well?
    A. play    B. plays       C. to play    D. playing
6. Is _______ necessary to complete the design before National Day?
    A. this B. that C. it D. he
7. I don’t think _______ possible to master a foreign language without much memory work.
    A. this   B. that  C. its   D. it
8. Does _______ matter if he can’t finish the job on time?
    A. this B. that C. he D. it
9. Tom’s mother kept telling him that he should work harder, but _______ didn’t help.
    A. he B. which C. she D. it
10. _______ is a fact that English is being accepted as an international language.
    A. There     B. This    C. That     D. It
11. I hate _______ when people talk with their mouths full.
    A. it B. that C. these D. them
12. I like _______ in the autumn when the weather is clear and bright.
    A. this B. that C. it D. one      
13. _______ happened _______ he is unfit for the office.
    A. This; that    B. That; that   C. It; that      D. He; that
14. We took _______ for granted that they would accept our advice.
    A. that B. this C. it D. them
15. _______ that the scientist will give us a talk next month?
    A. Is true B. Is it true C. It’s true D. It’s truly
参考答案
1—5  BBDCC     6—10  CDDDD    11—15  ACCCB

形式主语和形式宾语讲解与练习
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