.几种容易混淆的时态比较一、一般过去时与现在完成时的用法比较。1.“一般过去时”所关心的是过去之事,与现在无联系，常带有表示过去某个时间的状语。现在完成时所关心的是过去发生的事与现在有影响和联系对现在产生某种结果现在完成时强调过去与现在的联系语句译成汉语后常常带有“已经了”或“了”的含义。A:.I have lost my pen. Can you lend me yours? B:.Why dont you buy one?A: It fell into the river only a moment ago when I washed my hands. Now Ive got to fill in a form with a pen.2.现在完成时与for或since引起的短语连用时表达从过去开始的动作或状态延续至今,而一般过去时与“for+一段时间”连用时只指过去的动作或状态在过去延续了多长时间。We have stayed here for three weeks. I think we are going to s
