B6U3_it用法专项练习题111B6U3_it用法专项练习题111.doc

高二英语 It的用法（专项总结及训练） 一、人称代词1，it的最基本用法是作代词，主要指刚提到的事物，以避免重复: ①They watched the train until it disappeared in the distance.2.，也可以指动物或婴儿(未知性别的婴儿或孩子): ②Is this your dog？No, it isn’t. ③They got a baby and it was a ten-pounder3. 有人敲门时：Who is it?二、.非人称代词 1.it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等：  ⑴.指天气：It is a lovely day, isn’t? it?  ⑵.指时间: It was nearly midnight when she came back. ⑶.指日期:It is April First today. ⑷.指距离:It is some 3000 kilometers from Beijing to Guangzhou. ⑸.指价值:It is three dollars. ⑹.指温度:Today it is 30 degrees centigrade. 三、其他用法1.在句子的主语不太明确时充当主语，表示谁在做某事：  ①Who is it there? Its I (me/you/he.....). ②I thought it was Mary, but it was not she. ③Her face?lighted when she saw who it was. 2.泛泛的指某件事： (有时泛指一般情况) ①It doesn’t matter.  ②It is a shame, isn’t? it? ③How is it going?(情况怎样) ④It says in the newspaper that...... 四、作形式主语，替代主语从句，动词不定式，或动名词短语：　　　1.作形式主语替代主语从句 ⑴It is clear ( obvious， true， possible， certain....) that 从句 常译为＂┅清楚的（显然的，真的，可能的,肯定的．．．）＂　　 It is very clear that he’s round and tall like a tree. = That? he’s round and tall like a tree is very clear. ⑵It is important ( necessary， right， strange， natural...) that 从句 常译为┅是重要的(必要的,对的,奇怪的,自然的┅).that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。? ①It is important that we (should) learn English well. 　　? ②It is necessary that he (should) remember these words.  ⑶It is said (reported/ learned/believed/thought/known/told/hoped.....) that 从句 常译为＂据说（据报道，据悉．．．）＂。 　　? ①It is said that he has come to Beijing. 　　? ②It is reported that another earth satellite has been put into orbit.  ⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded... ) that 从句.that　后的从句要用虚拟语气（should + 动词原形），should 可以省；常译为＂据建议；有命令．．．） 　 ①It is suggested that the meeting ( should ) be put off. 　  ②It was ordered that we ( should ) arrive there in two hours. ⑸It is time ( about time ，high time ) that从句(虚拟语气:动词用过去时did) It is time that children went