资源简介

(共12张PPT)
Part 4 Grammar
Unit 3 I’ve Got a Headache
Lead-in
Presentation
Practice
Summary
Look at the lyrics
We have known each other
我们认识了彼此
since we were nine or ten
从我们九岁或十岁的时候
Together we have climbed the hills and trees
我们一起爬山爬树。
基本结构
have/has + done
助动词 （无实际意义）
The Present Perfect Tense (现在完成时态)
Practice
Summary
Presentation
Lead-in
Presentation
Presentation
Lead-in
Change the sentences
Practice
Summary
1.The boy has already gone home . （改为一般疑问句）
___________________
2. The girl has just given it to me . （改为否定句）
___________________________
3.They have ever visited the island before .（改为否定句）
———————————————————————————
Has the boy gone home yet
The girl hasn’t given it to me yet.
They have never visited the island before.
Presentation
Lead-in
Practice
Summary
句型结构
肯定结构
S.+ have/has +done +其他.
S.+ have/has + not + done+其他.
否定结构
一般疑问结构
Have / Has + S.+ done+其他
Yes, S. + have/has.
No, S. + haven’t/hasn’t.
Presentation
Lead-in
Practice
Summary
done 的变化
work, call
plan, stop
live, change
2.以e结尾+d
cry, try
4.辅音字母+y,变y为i+ed
1.直接+ed
3.“辅元辅”结尾（重读），双写末尾字母+ed
规则变化
Presentation
Lead-in
Practice
Summary
用法1：过发影响现
I lost my keys.
I have lost my keys.
时态
一般过去时
现在完成时
重点含义
动作发生在过去
对现在造成的影响
过去
现在
将来
Presentation
Lead-in
Practice
Summary
用法2：过发持续现
1. We have learnt English for eight years.
2. She has already lived in Xi’an for 18 years.
发生在过去的动作持续到现在，甚至将来继续…
过去
现在
将来
Presentation
Lead-in
Practice
Summary
时间标志词
already 已经,一般用于肯定的陈述句,句中或句末
never 从未,一般用于肯定的陈述句,放在句中,表否定的含义
ever 曾经,一般用于疑问句Have+主语+ever+过去分词
yet 还,仍然,一般用于否定句和疑问句,用于句末
just 刚,一般用于肯定的陈述句,放在句中（注意与just now的区别）
recently 近来, 用于句末
before 以前,用于句末
since+时间点/一过从句 自从......以来
for+时间段 长达......
做 题 技 巧
Practice
Summary
Presentation
Lead-in
Practice
1.找时间标志词，定时态
2.看主语，定have/has形式
3.变done要当心
Lead-in
Practice
Summary
Practice
Presentation
1.All the students _______ very hard over the last three years.
A. works B. has worked C. have worked D. worked
2.—Do you still play basketball
—Oh, no. I ____ it for the past two years.
A. haven't played B. didn't play C. won't play D. hadn't played
3.—How do you like Beijing, Miss Read
—I've no idea. I _____ there.
A. have gone B. have been C. haven't been D. haven't gone
4.—When did he go to America
—Oh, he ______ there since half a year ago.
A. went B. has been C. has gone D. was
5.Joe ____ me four times this morning already.
A. have called B. has called C.called D. calls
have been to 去过已归（人在）
常与次数once，twice，ever连用
have gone to 去了未回（人不在） 人不在，有人找，主语很少为一二
have been in 在某地待了一段时间 与for/since 连用
注意：遇到here, there, home, abroad, 去掉to, in
Summary
Lead-in
Practice
Presentation
the present perfect tense
过发影响现
过发持续现
(时间标志词)
basic structure
basic usage
skills
一找 （标志词）
二定 （have/has）
三当心 (done)
...have/has +done...
...have/has + not + done...
Have / Has + S.+ done...

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