初中英语外研版 (新标准)八年级下册Unit 3 Language in use教学演示ppt课件

这是一份初中英语外研版 (新标准)八年级下册Unit 3 Language in use教学演示ppt课件，共30页。PPT课件主要包含了学习目标，Revision，新课导入，新课讲解，haven’t，hasn’t，Practice，already，just，yet等内容，欢迎下载使用。

1. T summarize and cnslidate the use f present perfect tense. 2. Structure: t describe the space.
1.Read and recite the wrds in Mdule the passage with the crrect frm f the wrds in the bx.
I've just made a mdel spaceship.We have nt fund life n any ther planets yet.Astrnauts have already been t the mn.Has it arrived yet?
现在完成时用在什么地方呢？
当我们要表达“某人曾经做过某事”, “某人已经做了某事”等意思时, 英语要用“现在完成时”来表达。
否定句I have nt wrked.He/She has nt wrked.They have nt wrked.
肯定句I have wrked.He/She has wrked.They have wrked.
现在完成时的结构：has/have + dne (动词过去分词)
She / He / It / 或sb.的单数形式
has dne sth.
I/We/Yu/They或sb.的复数形式
have dne sth.
现在完成时的一般疑问句形式是：
Has dne sth.?
she / he / it / 或sb.的单数形式
Have dne sth.?
I / we / yu / they / 或sb.的复数形式
现在完成时的肯定形式是：
我父母曾经坐船去大连旅游。她已经完成作业。我父母未曾坐船去过大连旅游。
My parents have travelled t Dalian by ship.
She has finished her hmewrk.
My parents haven’t travelled t Dalian by ship.
她还没有完成作业。你父母曾经坐船去大连旅游过吗？她已经完成作业了吗？
Have yur parents travelled t Dalian by ship?
Has she finished her hmewrk?
She hasn’t finished her hmewrk.
要表达“刚刚做完某事” “已经做完某事”时，我们同样可以用现在完成时。例如:I have just heard the news.Astrnauts have already been t the mn.可以看出，just 用来表示“刚刚”，already 用来表示“已经”，一般置于have/has之后，两者都用于肯定句，在否定句中则要用yet,表示“还（未）”。例如：The scientists haven’t heard frm it yet.
I’ve just been t the pst ffice. 我刚才去邮局了。Have yu ever been t Hangzhu? 你曾经去过杭州吗？Mary has never been t the Great Wall. 玛丽从未去过长城。
have been t 与 have gne t 的区别
1. （1）have/has been t意为“曾经去过某地”，表示现在已经不在那里了。可与just, ever, never等连用。例如：
（2）have/has been t 后面可接次数，表示去过某地几次。I’ve been t Beijing three times. 我去过北京三次。They have been t that village several times. 他们已经去过那个村庄好几次了。
2. have /has gne t 意为“到某地去了”，表示到了某地或正在去某地的途中。总之，说话时该人不在现场，一般不用第一、第二人称代词作句子的主语。例如： —Where is Tm? ——汤姆在哪里？ —He has gne t the bkshp.——他到书店去了。
already, just, ever, yet, never
already, just
ever, yet, never
与现在完成时连用的几个副词：肯定句:疑问句和否定句: yet 常置于句末already, never, ever, just一般置于助动词have/has之后，过去分词之前。
A: Have yu… ?B: Yes, …/ N, …(using already, just, ever, yet, never)
Spaceship n Mars Astrnauts have __________ been t the mn but they have nt been t any ther planets.Hwever, a spaceship has __________ arrived n Mars and it has ________ sent back phts f the red planet. Is there life n Mars? We d nt knw ______.
1.Cmplete the news with already, just and yet.
1.Astrnauts have been/ gne t the mn and spaceship has been/gne int space. It will travel fr ten astrnaut has been/gne t the space statin. He will cme back spaceship has been/gne t the space statin.It brught back tw astrnauts.
Chse the crrect answer.
have/has been have/has gne1.A spaceship _____________ t Mars.It is cming back t earth next f astrnauts ____________ t the space statin. They fund it very astrnauts ____________ t the mn.4.A British astrnaut ____________ t the space statin. He will cme back in January.
Cmplete the sentences with the expressins.
Nicky:I’ve just _________(watch) a great TV prgramme abut space. D yu knw that scientists have __________(discver) water n Mars?Bill: N! Really? That’s very interesting. ________ they _____(try) t find life n mars?
Cmplete the cnversatin.
Nicky: Well,they’re lking fr life but they ______________(nt find) anything yet.Bill: _________ yu ________(see) the phts f Mars?Nicky: N. What des it lk like?Bill: It’s red！
haven’t fund
Have seen
Dear Li Fang,I’ve _________ finished reading a great bk at schl.I haven’t ___________ anything as gd as that fr a lng time! It’s a stry abut the slar system.In the bk, the writer imagines that astrnauts have ________ t Mars. I’ve _________ read that befre and I think it’s very interesting.
Cmplete the email with the wrds in the bx.
been, just, met, never, read, written, yet
I haven’t _________ anyne famus in my life but I hpe ne day I can meet an astrnaut. I’ve ________ t a Chinese astrnaut fr mre infrmatin abut space and his experience f space travel. I hpe he will write back. He hasn’t _______.Maybe he is t busy. I’m still waiting.Best wishes,Liu Dan
Listen and cmplete the ntes.
1.The astrnaut jined CNSA________ years has flwn in a spaceship _______ felt _________ when he was in the has been t the space statin earth was very ________ when he saw it frm the space decided t be an astrnaut because he has always been _______ in space.
In July 1969 Neil Armstrng became the first __________ t walk n the ________.Peple all arund the wrld watched their televisins waiting fr the ________ t ______ the earth. We have nw ___________ a lt mre abut ur slar system and we have sent ___________ t Mars, but n ne has walked n that planet.Nt ______ but I d nt ________ smene will ne day!
Cmplete the passage with the crrect frm f the wrds in the bx.
astrnaut discver dubt mn news reach spaceship yet
一、用所给单词的适当形式填空。1.Scientists_____________ (send) spaceships t Mars s ’s father _________(g) t Lndn last mnth.He____________ (g) there three ne_____________ (be) t Mars yet, because Mars is very far away, much farther than the mn.
4.Astrnauts _________already _________(fly) t the mn many (nt read) the latest news abut the space ______________________ (in) since 5 years ag.
haven’t read
has been in
二、单项填空。( )1.—May I speak t Mr.Smith? —Srry, he isn’t in.He__________ Changsha. A.has been t B.has gne t C.went t D.g( )2.—__________ yu ever__________ t the Great Wall? —Yes.Three times. A.Has; been B.Have; been C.Have; gne D.Has; gne( )3.The Smiths__________ many places f interest since tw years ag. A.visit B.have visited C.visit D.visits
( )4. Have yu__________ the mvie befre? A.watched B.see C.reading D.lks( )5. He speaks English very well because he__________ in the USA fr 20 years. A.lives B.lived C.has lived D.had lived( )6. Marcus is ur freign teacher.He__________ ur schl fr tw years. A.went B.has been t C.has been in D.has gne t