牛津译林版八年级下Unit1 Past and present Grammar课件

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名称 牛津译林版八年级下Unit1 Past and present Grammar课件
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更新时间 2016-03-03 09:18:17

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课件16张PPT。8 B Unit 1 Past and present
Grammar

Present perfect tense一、现在完成时的定义构成:
定义:
(1)表示动作发生在过去,延续到现在。(2)表示过去发生的某一动作对现在造成的影响或产生的结果.
have/has + 过去分词
二、现在完成时的构成(1)肯定句:I/We/You/They + have + p.p(过去分词)+其它。
He/She/It + has + p.p(过去分词)+其它。1.他们已经完成家庭作业了。
They ______________ their homework. (finish)
2.他已经完成家庭作业了。
He ______________his homework. (finish)
have finishedhas finished(2)否定句I/We/You/They+have not / haven’t +p.p(过去分词)+其它。
He/She/It +has not / hasn’t +p.p(过去分词)+其它。
They _______________ their homework yet (还未).
(finish)
He _______________ his homework yet. (finish)haven’t finished
hasn’t finished
(3)一般疑问句及回答---Have+I/you/we/they+p.p(过去分词)+其它?
---Yes, I/you/we/they have.
---No, I/you/we/they haven’t.
---Has +she/he/it+p.p(过去分词) +其它?
---Yes, she/he/it has.
---No, she/he/it hasn’t.
你找到你的钢笔了吗?没有。
--- Have you found your pen?
--- No, I haven’t.
他已经搬到南京了吗?是的。
--- Has he moved to Nanjing?
--- Yes, he has.
(4)特殊疑问句特殊疑问词+have/has+主语+p.p+其它?1.The girl has learned English for 6 years.
2.I have eaten two apples for breakfast.
How long has the girl learned English?
What have you eaten for breakfast?
三、过去分词的构成A 规则动词 finish-finished change-changedcarry-carried
cry-criedstop- stopped
fit-fitted
plan-planned +ed一般动词
+d以“ e ”结尾的动词
-y+ied
以“辅音字母 + y ”结尾动词 双写该辅音字母 +ed重读闭音节结尾,末尾只有一个辅音字母
(B) 不规则动词的过去分词(Page122)过去分词的构成travelledmovedstayedownedlearnedvisitedstoppedfinishedshoppedsolvedA 规则动词的过去分词B 不规则动词的过去分词thoughtcaughtgivenmadewrittenputcostgrownhurtrunfeltfallenflownhaddrunkbroughtwornsungforgottenkept完成下面的练习
(1)He _____________(not finish) the homework yet.
(2) My family ________ (live) in Nanjing since 1996.
(3) They ________ already ________ (decide) to go to Kunming for the holiday.
(4) The girl ______________ (learn) English for about two years.
(5) ________ Tom ________ (write) letters to you recently?hasn’t finishedhave livedhave decidedhas learnedHas writtenLet’s try!She has already cleaned the kitchen. (改为
否定句)
She__________cleaned the kitchen ___________.
2. They have visited some interesting places in China. (改为一般疑问句)
___________ they _____________ ___________ interesting places in China?
3. The poor dog has died.(改为一般疑问句并作否定回答)
---_________the poor dog _________?
---No, it __________.hasn’t yetHave visited anyHas died hasn’t Let’s try!4. They have borrowed ten books from the library. (对划线部分提问)
_________ _________books __________ they _________ from the library?
5. I have ever been to the Great Wall. (改为
否定句)
I ________ ________ been to the Great Wall.
How many have
borrowedhave never四、与现在完成时连用的时间状语 
现在完成时的时间状语有:for, since, ever,never,just,already, yet, recently, before, in the past/last few years, over the years, over the past few years, many times, so far。
Conclusion:
现在完成时的含义
现在完成时的构成
现在完成时过去分词的构成
与现在完成时连用的时间状语词