It 形式主语跟of和for的区别sort of和kind of的区别
For many students, it is easy to get to school.  对许多学生而言, 到校很容易。 【思一思  句型剖析】
  (1)“It is +adj. +动词不定式短语”句型中, it在句中作形式主语, 而真实主语是后面的动词不定式短语。有时动词不定式有自己的逻辑主语, 常由“for sb 或of  sb. ”构成。
 (2)it作形式主语时常用两种句式结构: 
It is+adj. +for sb. +to do sth.  形容词描述事物的特征、性质, 如easy, difficult,  interesting,  funny,  dangerous,  important, impossible, useful等 
    It is+adj. +of sb. +to do sth.  形容词描述行为者的性格、品质, 如kind, friendly, nice, right, clever, polite, careless, cute等 
辨异: It’s interesting for us to play games here in the park, but I think it’s impolite of us to make so much noise.  我们在公园里玩游戏是很有意思, 但我觉得我们这么吵闹是不礼貌的。 
e.g     It is easy for me to learn math.       
 It is impossible for you to enter a good college. 
It is very kind of you to help me with physics.       
It’s dangerous for you to swim alone in the river.       
It is friendly of you to show me the way to the police station.       
It is more than nice of you to help the old. 
一．Fill in the blanks: 
1. It is not easy _________ (for/of)us ________(learn) a foreign language. 
2. It’s useful ________(for/of) us to use a map when we go to a new city. 
3. Is ______ necessary to complete the design before The National Day? 
4. It is _________(possibly) _______(for/of)us to fly to the moon in a spaceship. 
5. It’s very kind ________(for/of) you _______(help) me with my homework.
6. It is very polite ________(for/of) him not _________(speak) loudly in public. 
7. It is bad for your teeth ________(eat) so much chocolate. 
8. It is good _______(for/of) your health ______(take) exercise every day. 
9. It’s ________(importance) for her to get good grades in every subject. 
10. It’s ________(difficulty) for Jane to get along well with others. She has such a bad temper. 
二．True or False: 
1. This is impossible for us to get across such a narrow bridge.
 2. Sometimes it’s rudely of me to yell at my parents. 
3. It’s good for your health taking exercise regularly. 
4. It’s cute for him to do such a thing. 
5. It’s danger for him to go into a forest alone. 
三．Test Fill in the blanks: 
1. It is foolish ______ (for/of)you _____________(give up) such a good chance. 
2. It is necessary _______(for/of) college students ________(master) at least a foreign language. 
3. It is careless ________ (for/of)you ________(make) such a mistake. 
4. It’s polite ________ (for/of)you _________(help) the woman cross the road. 
5. It is necessary ______  us to learn every subjects. 
6. It’s  impossibly ____  her to get over this difficulty. 
True or False: 
1. My parents always say that it’s dangerous of a girl to go out late at night.
 2. It’s more than fool of her to trust this guy so quickly. 
3. It’s bad of your health to stay at home watching TV all the day. 
4. It’s important for you mastering a foreign language. 
5. It’s friendly of you help me to get this important information. 

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。