【编者按】精品学习网英语四六级频道为大家收集整理了“英语六级语法复习:一般现在时代替完成时”供大家参考，希望对大家有所帮助!
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.