it用法
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代 词 IT 的 用 法
１、代替刚提到的一件事物。
２、起提示代词的作用，指一个人或事物；指做某个动作的人。
３、表示时间、天气、距离等。
４、代替一个由否定式、动名词短语或主语从句。
５、自然现象（如天气、气候、明暗等）、季节时间、环境等。
６、强调句型：It is/was+ 被强调部分＋that...
eg: It was Xiao Yang that did it.
７、It takes sb. some time to do sth.
eg: It took the sixth blind man quite a long time to find the elephant.
８、It is one's duty to do sth.
eg: It is our duty to attend this matter.
９、It is no use /good doing sth.
eg: It's no use talking to about it.
１０、It is ＋ for/of sb. to do sth.(necessary, important, strange, natural,后用for，在foolish, kind, nice, clever, silly, stupid, good, right, wrong rude等后用of。
eg:It is necessary for us to master a foreign language.
It is very kind of you help me with my English.
１１、It happens/seems等动词＋that从句：
eg:It happened that I wasn't there that day.
It seemed that he had read the report.
１２、It doesn't matter to sb. whether...句型：
eg:It doesn't matter to me whether he comes or not.
１３、It is said/supposed/known/reported/announced/decided等动词＋that从句：
eg: It is said that the novel has been translated into several foreign languages.
１４、It is + 时间 + since从句（从句中谓语动词用一般过去时）。
eg: It is ages since I last saw him.
１５、It is + the 序数词 + time + that从句（从句中通常用现在完成时）。
eg: It/This is the second time that I have been to Beijng.
１６、It is + adj.+ that 从句
（形容词有：important, necessay, impossible, natural等，that从句中通常用虚拟语气should do或do）.
eg: It is important that we should keep the balance of nature.
１７、It is + n. + that 从句 （名词有：a pity, a shame, no wonder等）
eg: It is a pity that you didn't come yesterday.
１８、It is time that从句（从句中虚拟语气did）.
eg: It is time (that) you went to bed.
１９、It is (not) long before从句（从句中用一般现在时代替一般将来时）。
eg: It was not long before they drove the invaders from their country.
２０、动词（feel, think, make, find, consider）＋ it ＋adj.＋that从句。
动词（feel. think, make, find, consider）＋it＋adj.＋to do sth.
另：take it for granted that从句。
eg: You may think it strange that anyone would live there.
I have made it a rule to have a walk after supper every day.
You should not take it for granted that your parents should give you money.
Step6. More practice:
Choose the best answer of the following:
1. I don’t think _____ possible to master a foreign language without much memory work. A. this B. that C. its D. it
2. It was not _____ she took off her glasses ______ I realize she was a famous film star. A. when, that B. until, that C. that, until D. when, then
3. It was not until 1920______ regular radio broadcasts began.
A. while B. which C. that D. since
4. _______ is a fact that English is being accepted as an international language.
A. There B. This C. That D. It
5. –He was nearly drowned once.
_When was ______?
_ _____was in 1998 when he was in middle school.
A. that: It B. this; This C. this; It D. that; This
6.I hate _____ when people talk with their mouths full.
A. it B. that C.these D. them
7. The Parkers bought a new house but _____ will need a lot of work before they can move in. A. they B. it C. one D. which
8. It is quite _____ that he will be present at the meeting.
A. sure B. right C. certain D. exact
9. It is impolite ______you to ask one’s private affairs.
A. for B. of C. to D on .
10.The Parkers bought a new house but ______will need a lot of work before they can move in.
A. they B. it C. one D. which
Suggested answers: D B C D A A B C B B
１、代替刚提到的一件事物。
２、起提示代词的作用，指一个人或事物；指做某个动作的人。
３、表示时间、天气、距离等。
４、代替一个由否定式、动名词短语或主语从句。
５、自然现象（如天气、气候、明暗等）、季节时间、环境等。
６、强调句型：It is/was+ 被强调部分＋that...
eg: It was Xiao Yang that did it.
７、It takes sb. some time to do sth.
eg: It took the sixth blind man quite a long time to find the elephant.
８、It is one's duty to do sth.
eg: It is our duty to attend this matter.
９、It is no use /good doing sth.
eg: It's no use talking to about it.
１０、It is ＋ for/of sb. to do sth.(necessary, important, strange, natural,后用for，在foolish, kind, nice, clever, silly, stupid, good, right, wrong rude等后用of。
eg:It is necessary for us to master a foreign language.
It is very kind of you help me with my English.
１１、It happens/seems等动词＋that从句：
eg:It happened that I wasn't there that day.
It seemed that he had read the report.
１２、It doesn't matter to sb. whether...句型：
eg:It doesn't matter to me whether he comes or not.
１３、It is said/supposed/known/reported/announced/decided等动词＋that从句：
eg: It is said that the novel has been translated into several foreign languages.
１４、It is + 时间 + since从句（从句中谓语动词用一般过去时）。
eg: It is ages since I last saw him.
１５、It is + the 序数词 + time + that从句（从句中通常用现在完成时）。
eg: It/This is the second time that I have been to Beijng.
１６、It is + adj.+ that 从句
（形容词有：important, necessay, impossible, natural等，that从句中通常用虚拟语气should do或do）.
eg: It is important that we should keep the balance of nature.
１７、It is + n. + that 从句 （名词有：a pity, a shame, no wonder等）
eg: It is a pity that you didn't come yesterday.
１８、It is time that从句（从句中虚拟语气did）.
eg: It is time (that) you went to bed.
１９、It is (not) long before从句（从句中用一般现在时代替一般将来时）。
eg: It was not long before they drove the invaders from their country.
２０、动词（feel, think, make, find, consider）＋ it ＋adj.＋that从句。
动词（feel. think, make, find, consider）＋it＋adj.＋to do sth.
另：take it for granted that从句。
eg: You may think it strange that anyone would live there.
I have made it a rule to have a walk after supper every day.
You should not take it for granted that your parents should give you money.
Step6. More practice:
Choose the best answer of the following:
1. I don’t think _____ possible to master a foreign language without much memory work. A. this B. that C. its D. it
2. It was not _____ she took off her glasses ______ I realize she was a famous film star. A. when, that B. until, that C. that, until D. when, then
3. It was not until 1920______ regular radio broadcasts began.
A. while B. which C. that D. since
4. _______ is a fact that English is being accepted as an international language.
A. There B. This C. That D. It
5. –He was nearly drowned once.
_When was ______?
_ _____was in 1998 when he was in middle school.
A. that: It B. this; This C. this; It D. that; This
6.I hate _____ when people talk with their mouths full.
A. it B. that C.these D. them
7. The Parkers bought a new house but _____ will need a lot of work before they can move in. A. they B. it C. one D. which
8. It is quite _____ that he will be present at the meeting.
A. sure B. right C. certain D. exact
9. It is impolite ______you to ask one’s private affairs.
A. for B. of C. to D on .
10.The Parkers bought a new house but ______will need a lot of work before they can move in.
A. they B. it C. one D. which
Suggested answers: D B C D A A B C B B