it用法考点归纳.docVIP

it用法考点归纳 一、考点聚焦 （一）、it的基本用法 1. 用作人称代词，代替前文提到过的事物。 The train has arrived. It arrived half an hour ago. 2. 用以代替提示代词this, that。 —What’s this? —It’s a knife. —Whose watch is that? —It’s mine. 3. 起指示代词的作用，指一个人或事物。 —Who is knocking at the door? —It’s me. 4. 指环境情况等。 It was very noisy (quiet) at the very moment. 5. 指时间、季节、天气、气候等。 —What time is it? —It’s eight o’clock. It often rains in summer here. 6. 指距离。 It is a long way to the school. 7. 作形式主语。 替代作主语的从句、动词不定式、动名词，而把真正作主语的从句、动词不定式、动名词置于句尾。 It 作形式主语的常见句型： 1) 代作主语的动词不定式，其句型为 （1）It be adj. (for sb.) to do sth. 此处adj. 通常为描述事件的形容词如：easy, difficult, hard, necessary, unne-cessary, possible, impossible, likely, unlikely, right, wrong, important, unimport-ant, legal, illegal, well-mannered, ill-mannered, polite, impolite, clear, obvious, certain, suitable, proper, fit, useful, useless, dangerous等。 例如： It is illegal (for a teenager) to drive a car without a license. （2）It be adj. of sb. to do sth. 此处adj. 通常为描述人的形容词：kind, unkind, nice, rude, cruel, considerate, thoughtful, thoughtless, careful, careless, silly, foolish, stupid, clever, wise, crazy等。 例如： It’s kind of you to help me with the problem. 2) It替代作主语的动名词的常见句型 It’s no good/use doing… It’s (well)worth doing… It’s (well)worth one’s while doing/to do… It’s (well)worth while doing/ to do 例 如: It’s no use crying over spilt milk. 3) It替代作主语的从句常见句型 （1）It is + noun +从句 例如： It is no secret that the president wants to have a second term at office. （2）.It is adj. +clause It’s surprising that… (should)………竟然…… It’s a pity/shame that…(should)………竟然…… 例如： It’s important that you should apologize to her for your rudeness.(=It’s of much importance that you should apologize to her for your rudeness.) （3）It verb sb. + clause= It is v-ing + clause It+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze/bother/concern/frighten/please/anger sb. that… 例 如： It wo