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译林2003课标版《Grammar and usage(2)： Present perfect continuous tense》PPT课件优质课下载
Look at the following sentences and try
to explain why the tense is used in these
sentences.
1. We have studied English for about
five years.
2. They have lived there since 1990.
3. She hasn’t finished her homework yet.
4. Eric has just come back.
5. How long have you been here?
1.The form of the Present
perfect tense:
We form the present perfect tense with have/has and the past participle of the verb.
have (has) +过去分词
Justin has disappeared, so Kelly is very sad.
We use the present perfect tense to talk about things that happened in the recent past, but are connected to the present.
Note:
2. The uses of the present perfect tense:
I have not seen Justin since last Friday night.
We also use the present perfect tense to talk about something that started in the past and is still happening now.
Note :
I haven’t seen your for ages.
He has just gone out.
It has been very cold lately.
She has already finished her homework.
He hasn’t seen her since the meeting.