21.It happens that… 碰巧…… 相当于happen to do。例如: It happened that I heard their secret. 可改写为: I happened to hear their secret. 我碰巧听到了他们的秘密。 22.It’s/has been +一段时间+since从句 自从某时起做某件事情已经一段时间了 该句型中since引导的时间状语从句常用一般过去时。例如: It’s twenty years since he came here. 他来这里已经20年了。 It has been six years since he married Mary. 他和玛丽结婚已经六年了。 23.It is +adj./n. + for sb. to do sth. 做某事对某人来说…… It是形式主语,真正的主语是不定式to do sth。例如: It’s not easy for us to study English well. 对我们来说学好英语并不容易。 It’s a good idea for us to travel to the south. 去南方旅行对我们来说是个好主意。 24.It’s + adj. + of sb. to do sth. It是形式主语,to do sth.是真正的主语, 当表语(即形容词)能对逻辑主语描述时,常用介词of,而不用for。例如: It’s very polite of you to give your seat to old people. 你给老人让座,非常有礼貌。 25.It seems/appears (to sb) that… (在某人看来)好像…… 此句中的it是主语,that引导的是表语从句。例如: It seems that he is lying. 看样子他好像是在撒谎。 It appears to me that he never smiles. 在我看来,他从来没有笑过。 26.It is +数词+metres/kilometers long/wide… ……是多少米(公里)长(宽) 用来表示物体的长(宽,高),如数词大于一,名词要用复数。例如: It is 20 metres long from this end to that end. 从这端到那端有二十米长。 (责任编辑:admin) |