2017年6月英语六级语法重要知识点讲义（1）
来源 :中华考试网 2017-05-16
中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.