高中英语课件—it的用法.ppt

Good morning, everyone!;① It is never too old to learn. ② It is easier to fall than to rise. ③ It is no use crying over spilt (溢出的) milk. ④ It never rains but it pours(泼水). ;⑤ It is easy to open a shop but hard to keep it always open. ⑥ It takes three generations (代,辈) to make a gentleman. ;Grammar:Use of “It”;*;The use of “it”;Read and analyze the following sentences.;e.g: ______ a. Jim is at the door．____wants to see you． b. Someone is at the door．____must be Jim． A. That, It B. It, He C. He, It D. Who, He 一般说来，在指代身份或性别明确的人时，通常要根据情况用代词he／she；若是指代身份或性别不明的人，则用代词it;1. I can’t find my pen. I’m going to buy _____. 2. Life today is better than ______ in the old days. 3. I can’t find my pen. I must have lost _____. ;It 作为形式主语 当不定式、动名词、从句等用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语it. ;*;*;*;Read and analyze the following sentences.;跟踪训练1：It is+ adj. + that从句;It is said that… 据说…… It is reported that… It is supposed that… It is hoped that… It is well known that… ; 1.吸烟危害健康，这是事实。 2.碰巧我们在同一间大学 。 3.据说日本发生了地震。 4.有人建议他应该立刻戒烟。 ;二、it作形式宾语;1. I found it very interesting to study English. 我发现学英语非常有趣。 2. I think it no use arguing with him. 我认为和他争吵没有用。 3. He made it clear that he was not interested in this subject. 他非常清楚地表示他对那门学科不感兴趣。 ; 总结：当复合宾语中的宾语是不定式、动名词宾语从句时, 往往把真正的宾语放在它的补足语后面，而用it 作形式宾语, 放在宾语补足语之前。 该句型中的it 作形式宾语, 常用的动词有think, believe, make, find, consider, feel等。 ;在一些固定用法中考查;Rewrite the sentences using an “it” structure.; One midnight, was raining heavily.Mary was lying in bed.She couldnt fall sleep. Suddenly, she heard someone knocking at the door.“Who is ?” She asked.She looked at the clock hung on the wall. was striking two. “ is me.”One man answered. “ was impossible for him to appear here.”she thought. “John?Is__ you?” “Yeah! is me”the man answered. She rus