2017年6月英语六级语法重要知识点讲义（1）

1) 有些动词用一般现在时代替完成时：

hear, tell, learn, write , understand, forget, know, find , say, remember.

I hear (= have heard) he will go to London.

I forget (=have forgotten) how old he is.

2) 句型" It is … since…"代替" It has been … since …"

3) It is (= has been) five years since we last met.