原帖由 飘雪寒冰 于 2006-7-25 20:27 发表 5 I' M, R [; @% s"i haven't thought about it yet.. " 0 o" C" e7 h1 z5 Q5 i+ h) o " @3 w4 v6 E& i% GI always can't use the sentences like this.
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That's just my English teacher told us to do .
you know that practise makes perfect9 j5 E* Q9 t: W. V
and you can use simple past tense as weill一般过去时 2 `& |+ P$ X' G- u$ |9 x' N, e$ t5 Bcuz Americans seldom use perfect tense完成时 2 e: d6 R# q; K0 Nit's OK