2017学年度Book4Unit 2 Working the landGrammar(第4课时)(24张)
2017学年度Book4Unit 2 Working the landGrammar(第4课时)(24张)第5页

2. 在一些句子中,常用it作形式主语放在句首,而把真正的主语放到句末。 如: It is very important remembering others’ names. It is no use crying over spilt milk.