高中英语it用法.ppt

It的用法;It’s 10:08;1.指代不明性别的人 婴儿(未知性别的婴儿或孩子): The baby cried when it was hungry. 敲门 There’s a knock on the door. Who is it? 2.动物 Is this your dog？No, it isn’t.; 3.it有时并不指具体的东西，而泛指天气， 季节，时间，距离，环境 等， 1.It is a lovely day, isn’t it? ﹙指天气﹚ 2.It was nearly midnight when she came back. ﹙指时间﹚ 3.It was very quiet in the café. ﹙指环境﹚ 4. It is half an hour’s walk to the city centre. ﹙指距离﹚;4.It 作为代词与that, one 的区别。;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 2. We’ve been looking for houses but haven’t found ___ we like yet. A. one B. ones C. it D. them 3. I’m moving to the countryside because the air there is much fresher than ___ in the city. A. ones B. one C. that D. those; + adj. + to do sth. / clause It is / was + n. +( of/for sb. ) +过去分词 +doing sth.; It is kind of sb. to do sth. 如果不定式的逻辑主语是由 of引起，主句中的形容词必须是能表示逻辑主语特征的形容词。 常见的有： bad ， brave ， careless， clever ， cruel ， foolish ， good （好心的）， honest ， kind ， lazy ，naughty ， nice（有教养的）， polite， rude ， silly ， stupid ， wise ， wrong 　  It is kind of you to say so. ; 1. It is + adj. +that ..... (clear, obvious, true，possible, certain....)  “清楚（显然，真的，肯定．．．）”　 　　  It is very clear that he’s round and tall like a tree. 　　 ;2. It is important that ... ( necessary， strange， natural...) 该句型that 后的从句中要用虚拟语气. It is important that we (should) learn English well. 　　  It is necessary that he (should) remember these words. ;3. It is said that ...  (reported, learned, thought, believed ....) 据….. It is said that he has come to Beijing. 　 　 He is said to have come to Beijing. It is reported that another earth satellite has been put into orbit. ;4. It is suggested that ... ( ordered/demanded/insisted/commanded... ) 用虚拟语气（should + 动词原形 ） 　  It is suggested that the meeting ( should ) be put