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：
0 \% ~. X4 ?8 n# F5 E) d5 G- w
　　hear, tell, learn, write , understand, forget, know, find , say,　remember.
' s  o) F% p8 \) N1 ]# ?
  s$ h+ y% X. l/ e　　I hear (= have heard) he will go to London. 外语学习网
2 f3 O; L. P4 V
' r5 |! I3 o& l5 E& h* Q　　I forget (=have forgotten) how old he is.  
% R8 h8 f, Y, U' F* _. {2) 句型 " It is … since…"代替"It has been … since …"
3) It is (= has been) five years since we last met.