it做形式主语.ppt

）put it 说, 评价 “He is an honest man.” Tom put it. * . it 用作形式主语 .1 代替主语从句 1）It is + adj. +that从句 ① It is clear ( obvious， true， possible certain....) that ..... “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 ( necessary， right， strange， natural...) that ... 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。 It is important that we (should) learn English well. 　　 2）.It is +v-ed +that 从句 ① It is said (reported， learned....) that ...  据说（据报道，据悉．．．）“。 　　  It is said that he has come to Beijing. 　　 ②. It is suggested ( ordered / demanded/ insisted/ commanded... ) that ...  主句中的过去分词是表示请求，建议，命令等词时，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．．．） 　 　 It is suggested that the meeting ( should ) be put off. 　 = He is said to have come to Beijing. 3）. It is a pity ( a shame ... ) that ...  that后的从句一般用虚拟语气（should + 动词原形），should可省去．表示出乎意料，常译为“竟然”。没有这种意义时，则不用虚拟语气。  It is a pity that such a thing ( should ) happen in your class.  It is a pity that he is ill. 4).① It is time ( about time ，high time ) that ...  该句型中that 后的从句应该用虚拟语气，值得注意的是常用过去时态表示虚拟．常译为“是（正是）．．．的时侯．．．” 　　 　　  It is time that children went to bed. ② It is the first ( second ... ) time that ... “是第一（二）．．．次．．．”。  It is the first time I have been here.  = This is the first time I have been here. 5). It happens (seems， looks， appears ) that...  该句型中it是形式主语，that 引导的是主语从句，主句中的happen ， seem等词是不及物动词。  It happened ( so happened ) that he met his teacher in the street. 碰巧．．.  It seems that he will be back in a few days. 看来．．． 6). It doesn’t matter whether ( if ) ... 该句型中whether(if) 引导的从句是真正主语， 该句型常译为＂不论（是否）．．．没关系．．．。 It doesn’t matter if they are old. .2.作形式主语替代不定式　 1). It takes sb. ... to do sth. ＂做．．．要花费某人．．＂ 　　 It took thousands of people many years to build the Great Wall. 2). It is kind ( of sb. ) to do sth. 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 ，