2012年大学英语六级语法：一般现在时代替完成时

会计考友

1) 有些动词用一般现在时代替完成时：
8 c1 a- F+ ~' }5 C' u; x% H
　　hear, tell, learn, write , understand, forget, know, find , say,　remember.

+ [$ B4 @% P5 ]9 q$ j+ }2 L% X　　I hear (= have heard) he will go to London. 外语学习网

! E4 W  i4 D+ X0 v. G+ Q　　I forget (=have forgotten) how old he is.  
; `+ l6 L( O1 ?& X2 w. D! n3 G2) 句型 " It is … since…"代替"It has been … since …"
3) It is (= has been) five years since we last met.