《Grammar and usage(2)： Present perfect continuous tense》优质课PPT课件下载

《Grammar and usage(2)： Present perfect continuous tense》优质课PPT课件下载

自从上周五晚我就没有看到贾斯汀了。

I have not seen Justin since last Friday night.

该事件引起了公众的极大兴趣...

This incident has received great interest...

Present perfect tense

past

now

Yesterday , we

cleaned the

classroom.

Now , the classroom

is clean because

we have cleaned it.

用法1

强调过去发生的动作对现在产生的结果或影响

现在完成时用来表示过去发生或已完成的动作或状态对现在造成的影响或结果,也就是说,动作或状态发生在过去但它的影响现在还存在.

I have lost my wallet.(含义是:现在我没有钱花了.)

Jane has just had breakfast.(含义是:简现在不饿了.)

Michael has been ill.(含义是:现在仍然很虚弱)

He has returned from abroad. (含义是:现在已在此地)

1. My father bought many books for me yesterday .

Now , I have a lot to read because ________________________________

2. I saw this film last week.

Now, I know this film because I_____________________.

3. I did my homework yesterday.