一般过去时VS现在完成时

1、,一般过去时 VS 现在完成时,青岛53中 赵依萍,I have already cleaned the blackboard.,(黑板现在已经干净了),I cleaned the blackboard yesterday.,(黑板现在不一定是干净的),一般过去时只强调动作发生在过去，与现在没有任何联系。 现在完成时则是强调过去发生的动作对现在造成的影响或结果。,一般过去时：yesterday, last week, ago, in1980, just now, in the past 现在完成时： already, yet, ever, never, just, before, twice(

2、表次数)，recently，(ever) since, for+时间段,Key words,锁定关键词 快速做题,1. I _ (join) the book club last month and I _ (read) five books already. 2. - _ he _ (plant) the apple trees? - No, he hasnt. - When _ he _ (plant) them? - Tomorrow, I think. He _ now _ (mend) his car. 3. - _ you ever _ (drive) a car? - Yes,

3、I have. - When _ you first _ (drive) a car? - Five years ago. 4. - Tom, _ you _ (finish) the fiction yet? Yes. I _ (finish) the fiction just now. 5. _ you _ (visit) the Palace museum before?,joined,have read,Has,planted,will,plant,is,mending,Have,driven,did,drive,have,finished,finished,Have,visited,

4、Challenge,1. I wont go to see the film because I _my ticket. lost B. have lost,分析：我把电影票弄丢了所以不能去看电影了， 对现在造成了影响，所以用现在完成时。,2. Sorry, Peter. I _ I was in the way. A. didnt realize B. havent realized,分析：不好意思，Peter. 我刚才没有意识到 我挡路了，只是刚才没有意识到。如果选B的话， 那就意味着现在仍然没有意识到， 根据语境是错误的，所以选didnt realize.,Summary,一般过去时只强调动作 发生在过去， 与现在没有任何联系。,现在完成时则是强调 过去发生的动作 对现在造成的影响。,yesterday, last week, ago, in1980, just now, in the past,already, yet, ever