2013初中英语——现在完成时课件.ppt

文档介绍：The present perfect tense
现在完成时
He is full .
He has had a big breakfast.
。
功能：
I have learned English for ten years
到现在或还将持续下去。
基本结构
The present perfect tense
have / has + done
助动词 （可以帮助构成肯定、疑问和否定句）
现在完成时
:
have/ has + done (过去分词)
过去分词(pp)其变化方法和动词过去式基本相同。有部分不同，需要记好。
He has lived in Shenzhen for 4 years.
Has he lived in Shenzhen for 4 years?
Yes,he has. / No, he hasn’t .
has cleaned his room.
(写一个一般疑问句）
Has he cleaned his room?
2. She has lived in London
for four years. (划线部分提问）
How long has she lived in London?
3. He has been to China, ____ ____?
（写出反义疑问句部分）
hasn’t he
4. They have come back from work.
(写否定句）
They haven’t come back from work.
A: Have you surfed the internet (上网)?
B: Yes, I have . / No, I haven’t.
talk on the phone for an hour
play soccer
eat (eaten) French Fries
see (seen) a tiger
一、意义：
1) 过去 对 现在 （影响和结果）
2）过去 到 现在 （延续性）
Someone has broken the window. (窗户现在是坏的)
I have already lost the key. (我现在没有钥匙)
I haven’t read that book yet . (不了解书的内容)
I have just cleaned my hands. (手是干净的)
I have taught in this school for nine years.(持续到现在）
常与already(已经), yet(已经), just(刚刚),ever(曾经)等词连用.
already: 常用于肯定句中.
yet: 常用于否定句,疑问句尾.