现在完成时
1） 1. 表示过去发生的动作对现在造成的影响
2．表示过去某时间已经开始一直持续到现在的动作或状态
通常与下列时间状语连用 up to now, in the past, recently, by… , for 5 years, since 1994, so far, already, yet, ever, just…
2) 基本结构 主语+ have/has + P.P(动词过去分词)
1. I’ve finished this work.
2. He has ever been to Australia.
3. I have not heard from her recently.
4. I have already read this book.
Have you read…?
Yes, I have. No, I haven’t.
What have you read?
3) 过去分词的构成 （规则变化同过去式的构成）
不规则变化如下
do did done
go went gone
eat ate eaten
come came come
have had had
write wrote written
be was/were been
see saw seen
hear heard heard
swim swam swum
drink drank drunk
give gave given
forget forgot forgotten
take took taken
keep kept kept
sleep slept slept
teach taught taught
buy bought bought
tell told told
make made made
cut cut cut
hurt hurt hurt
read read read
let let let
1） 1. 表示过去发生的动作对现在造成的影响
2．表示过去某时间已经开始一直持续到现在的动作或状态
通常与下列时间状语连用 up to now, in the past, recently, by… , for 5 years, since 1994, so far, already, yet, ever, just…
2) 基本结构 主语+ have/has + P.P(动词过去分词)
1. I’ve finished this work.
2. He has ever been to Australia.
3. I have not heard from her recently.
4. I have already read this book.
Have you read…?
Yes, I have. No, I haven’t.
What have you read?
3) 过去分词的构成 （规则变化同过去式的构成）
不规则变化如下
do did done
go went gone
eat ate eaten
come came come
have had had
write wrote written
be was/were been
see saw seen
hear heard heard
swim swam swum
drink drank drunk
give gave given
forget forgot forgotten
take took taken
keep kept kept
sleep slept slept
teach taught taught
buy bought bought
tell told told
make made made
cut cut cut
hurt hurt hurt
read read read
let let let
