八年级下册优质英语课件unit3-4

Unit3-Unit4八年级下册优质英语课件Unit3-Unit4八年级下册优质英语课件1Mom:Peter,couldyouplease……?Peter:Yes,sure.

/Allright./Noproblem./Certainly./Sorry,Ican't.Ihavetodo...Mom:Peter,couldyouplease…2A:Couldyouplease......?

B:Yes,sure./Allright./Noproblem./Certainly.

Sorry,Ican’t.Ihavetodo......

Sorry,Ican’t.Iamdoing......

Makepoliterequests

礼貌提出请求takeouttherubbish

dochoresdothedishessweepthefloormakedinnerwashthecarmakethebedfoldtheclothescleanthelivingroomA:Couldyouplease......?3Askforpermission

礼貌地取得同意A:CouldI

useyourcomputer?B:

Sorry.I'mgoingtoworkonitnow.A:Well,couldIwatchTV?B:Yes,youcan,butfirstyouhavetocleanyourroom.

No,youcan't....2cMakeconversationsbetweenPeterandhisfather.Askforpermission

礼貌地取得同意A:C4Whatdidwelearntoday?倒垃圾干家务洗餐具扫地做饭整理床铺叠衣服takeouttherubbishdochoresdothedishessweepthefloormakedinnermakethebedfoldtheclothesWhatdidwelearntoday?倒垃圾t5打扫客厅帮助解决至少完成（做)某事购物回来看到这么凌乱cleanthelivingroomhelpoutatleast

finishdoingsth.bebackfromshoppingseethismess打扫客厅cleanthelivingroom6takeoutthetrashdochoresdothedishessweepthefloormakedinnermakethebedfoldtheclothesA:Couldyoupleasemakesentenceswiththesephrasesinthepasttense?B:Sure.Ididsomechores.cleanthelivingroomhelpoutwithatleastfinishdoingsth.bebackfromshoppingseethismessmothercleanReviewtakeoutthetrashA:Couldyou72.I’mjustastiredasyouare!

as...as意为“和……一样”，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+

adj./

adv.

+as。e.g.This

film

is

as

interesting

as

that

one. 这部电影和那部电影一样有趣。 Your

pen

writes

as

smoothly

as

mine. 你的钢笔书写起来和我的一样流畅。2.I’mjustastiredasyouar8as…as的否定形式为“notas/so+adj./adv.+as”。e.g.Hedidn’tactaswellasyou. 他表现得不如你好。as…as的否定形式为“notas/so+ad93.Foroneweek,shedidnotdoanyhouseworkandneitherdidI.neither用作副词，作“也不”解释，放在句首，表示前面否定的内容也适用于另一个人或物，句子须采用部分倒装。此时也可用nor替换neither使用。3.Foroneweek,shedidnotd10例如：—I

don’t

like

this

dress.

我不喜欢这件连衣裙。—Neither

/

Nor

do

I.

我也不喜欢。注意：neither之后的主语要置于助动词或系动词之后。例如：111.also

是比较正式的用语，语气较庄重。它通常放在句中，位于行为动词之前，连系动词之后;如有助动词或情态动词，一般放在助动词或情态动词之后。例如:Peteralsohastwobrothers.彼得也有两个兄弟。also,too,either,neither的用法1.also是比较正式的用语，语气较庄重。它通常放在句122.ImportantsentencesTheminuteIsatdowninfrontoftheTV,mymomcameover.Foroneweek,shedidnotdoanyhousework,andneitherdidI.I’mjustastiredasyouare!2.Importantsentences13CouldIgooutfordinnerwithmyfriends?Sure,thatshouldbeOK.Couldwegetsomethingtodrinkafterthemovie?No,youcan’t.Youhaveabasketballgametomorrow.Couldyoupleasetakethedogforawalk?OK,butIwanttowatchoneshowfirst.Couldyoupleasetakeouttherubbish?Yes,sure.阅读下列句子，观察问句的用法及回答。CouldIgooutfordinnerwith14在表示请求帮助或请求允许的疑问句中，常用could代替can，以表示礼貌，委婉或不确定的语气，而can则不具备这些语气。这种情况下不能把could看作can的过去式。以上两句中用could是为了表示礼貌的请求。表示请求帮助或请求允许时，除了can,could之外，还可以用may，句子的表达方式也各有不同，可以用不同的方式来表示同一个概念。例：在表示请求帮助或请求允许的疑问句中，常用co15①Could/Can/MayIuseyourcarforaday?②IwonderifIcoulduseyourcarforaday?

对于①、②句所作允答可以各种各样，如同意可以说Yes或Sure或Certainly，还可说Yes,(do)please.或Ofcourse.(youmay/can).或Goahead,please.或That’sOK/allright;如果不同意，可以说I’msorryyoucan’t.或I’mreallysorry,butIhavetouseittoday.要避免说No,youcan’t.这样显得很不礼貌。否定回答通常用委婉语气。①Could/Can/MayIuseyourcar16③DoyoumindifIuseyourcarforaday?

对于句③所作回答可以说Nevermind./Notatall.表“不介意”。不能用Yes./Sure./Ofcourse./Certainly.等。无论肯定还是否定应答中，要避免使用could，要用can或may。因为应答须用确定的语气。而could在表请求的问句中是为了表示礼貌或委婉语气，用在应答中则成了不确定语气，与情理不符。所以应答中不说Yes,youcould.或No,youcouldn’t.而要说Yes,youcan.或Sorry./No,youcan’t.③DoyoumindifIuseyourca17helpwithhouseworkandchoresathomehaveenoughstressfromschoolspendthetimeonschoolworkinorderto…Thereisnoneedforthemto…Itisimportantforsb.todosth.It’snotenoughto…developchildren’sindependenceThemore…,themore…Usefulphraseshelpwithhouseworkandchores18Unit4Whydon’tyoutalktoyourparents?Unit4191.IhavetostudytoomuchsoIdon’tgetenoughsleep.Discusstheseproblemsandgivesomeadvice.DiscussingWhydon’tyou

gotosleepearlierthisevening?1.Ihavetostudytoomuchso202.IhavetoomuchhomeworksoIdon’thaveanyfreetimetodothingsIlike.Whydon’tyou

gotoamoviethisevening?3.Myparentsdon’tallowmetohangoutwithmyfriends.Whynot

readsomeinterestingbooksathome?2.Ihavetoomuchhomeworkso212.情态动词should，could等should，shouldn’t

“（不）应该”，常用来提出请求和建议

could

“可以”可也用来给出建议。用could给出建议一般是指自己不太肯定，或者只是很多建议中的某一个，仅供参考；而should就是自己很肯定的或唯一的最好的一个建议。区别2.情态动词should，could等should，sh22should(shall)could(can)情态动词+v,可表示说话人的语气，可表达建议、要求、可能和意愿等，没有人称和数的变化。should(shall)could(can)232.Insteadhewatcheswhateverhewantsuntillateatnight.1)insteadadv.

代替；反而；却e.g.Ifwecan’tgotoHuashanMountain,we’llgotothecityofXi’anforthetrip.如果我们不能去爬华山，我们就去西安游玩。instead是副词，常置于句子末尾。insteadof是介词短语，后接名词、代词、动名词等。

辨析2.Insteadhewatcheswhatever24例如：Last

summer

I

went

to

Qingdao.

This

summer

I’m

going

to

Dalian

instead.去年夏天我去了青岛。今年夏天我要去大连。

Instead

of

going

to

Qingdao

I’m

going

to

Dalian

this

year.今年我打算去大连，而不去青岛。例如：252.AsfarasIknow,therearenoman-madeobjectsasbigasthis.

据我所知，再没有像它这样大的人造物体了。asfarasIknow是一个固定的表达方式，还可以说sofarasIknow，意思是“据我所知”。例如：AsfarasIknow,Jack’sgottwinsisters.就我所知，杰克有一对孪生姐妹。They’renotcomingtoday,sofarasIknow.他们今天不来了—就我所知是这样的。2.AsfarasIknow,thereare26根据课本内容，完成下列句子。1.你看上去很疲劳，怎么了？You____tired.What’s__________?2.昨晚，我一直学习到午夜，因此我没有睡足觉。

Istudied______________lastnightsoIdidn’t_________sleep.Grammarfocusuntilmidnightlookthemattergetenough根据课本内容，完成下列句子。1.你看上去很疲劳，怎么了？273.我应该做什么？____________Ido?4.你为什么不忘掉此事呢？尽管她错了，但那不是一件大事。_________youforgetaboutit?_________she’swrong,it’snot____________.WhatshouldWhydon’tAlthoughbigdeala3.我应该做什么？WhatshouldWhyd285.他应当如何做？____________hedo?6.他应当和他的朋友谈一下，以便他能向他道谦。He______________hisfriend________hecansayhe’ssorry.Whatshouldshouldtalktosothat5.他应当如何做？Whatshouldshould29表建议的句型：Youshould/could+v.Whydon’tyou+v.?Whynot+v.?Couldyouplease+v.?

You’dbetter(not)+v.Wouldyouminddoing……?Whatabout/Howabout+n./doing……?表建议的句型：Youshould/could+v.30点拨：sothat

意为“因此”，引导目的状语从句，表示前一句所表述的动作的目的。在从句中常使用can/could/will/may/should等词。拓展：so…that…意为“如此……以至于”，常用于结果状语从句，表示上文动作所产生结果。点拨：拓展：312.A:Idon’thaveanyfriendsatmynewschool.WhatshouldIdo?B:________youdon’thaveanynow,you’llsoonmakesome.Although点拨：although意为“尽管……但是”，不能说，though…but。句意“尽管你现在没有朋友，但不久你就会有朋友的。”2.A:Idon’thaveanyfriends323.A:I’mworriedaboutmyschoolgrades.What’syouradvice?B:Youshouldn’twait_____thelastminutetostudyforatest.until点拨：until用于否定句中，表示句子的动作直到until短语所表示的时间才开始发生，即表示动作的起点。一般译为“直到……才”。3.A:I’mworriedaboutmysch334.A:Mikeismybestfriend,buthealwayscopiesmyhomework.WhatshouldIdo?B:________he’syourbestfriend,youshouldstilltellhimthatcopyingothers’homeworkiswrong.Although点拨：句意“尽管他是你的最好的朋友，但你还是应当告诉他，抄袭别人的作业是不对的。”，可知空格处应用although。4.A:Mikeismybestfriend,34ThankYou!ThankYou!35Unit3-Unit4八年级下册优质英语课件Unit3-Unit4八年级下册优质英语课件36Mom:Peter,couldyouplease……?Peter:Yes,sure.

/Allright./Noproblem./Certainly./Sorry,Ican't.Ihavetodo...Mom:Peter,couldyouplease…37A:Couldyouplease......?

B:Yes,sure./Allright./Noproblem./Certainly.

Sorry,Ican’t.Ihavetodo......

Sorry,Ican’t.Iamdoing......

Makepoliterequests

礼貌提出请求takeouttherubbish

dochoresdothedishessweepthefloormakedinnerwashthecarmakethebedfoldtheclothescleanthelivingroomA:Couldyouplease......?38Askforpermission

礼貌地取得同意A:CouldI

useyourcomputer?B:

Sorry.I'mgoingtoworkonitnow.A:Well,couldIwatchTV?B:Yes,youcan,butfirstyouhavetocleanyourroom.

No,youcan't....2cMakeconversationsbetweenPeterandhisfather.Askforpermission

礼貌地取得同意A:C39Whatdidwelearntoday?倒垃圾干家务洗餐具扫地做饭整理床铺叠衣服takeouttherubbishdochoresdothedishessweepthefloormakedinnermakethebedfoldtheclothesWhatdidwelearntoday?倒垃圾t40打扫客厅帮助解决至少完成（做)某事购物回来看到这么凌乱cleanthelivingroomhelpoutatleast

finishdoingsth.bebackfromshoppingseethismess打扫客厅cleanthelivingroom41takeoutthetrashdochoresdothedishessweepthefloormakedinnermakethebedfoldtheclothesA:Couldyoupleasemakesentenceswiththesephrasesinthepasttense?B:Sure.Ididsomechores.cleanthelivingroomhelpoutwithatleastfinishdoingsth.bebackfromshoppingseethismessmothercleanReviewtakeoutthetrashA:Couldyou422.I’mjustastiredasyouare!

as...as意为“和……一样”，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+

adj./

adv.

+as。e.g.This

film

is

as

interesting

as

that

one. 这部电影和那部电影一样有趣。 Your

pen

writes

as

smoothly

as

mine. 你的钢笔书写起来和我的一样流畅。2.I’mjustastiredasyouar43as…as的否定形式为“notas/so+adj./adv.+as”。e.g.Hedidn’tactaswellasyou. 他表现得不如你好。as…as的否定形式为“notas/so+ad443.Foroneweek,shedidnotdoanyhouseworkandneitherdidI.neither用作副词，作“也不”解释，放在句首，表示前面否定的内容也适用于另一个人或物，句子须采用部分倒装。此时也可用nor替换neither使用。3.Foroneweek,shedidnotd45例如：—I

don’t

like

this

dress.

我不喜欢这件连衣裙。—Neither

/

Nor

do

I.

我也不喜欢。注意：neither之后的主语要置于助动词或系动词之后。例如：461.also

是比较正式的用语，语气较庄重。它通常放在句中，位于行为动词之前，连系动词之后;如有助动词或情态动词，一般放在助动词或情态动词之后。例如:Peteralsohastwobrothers.彼得也有两个兄弟。also,too,either,neither的用法1.also是比较正式的用语，语气较庄重。它通常放在句472.ImportantsentencesTheminuteIsatdowninfrontoftheTV,mymomcameover.Foroneweek,shedidnotdoanyhousework,andneitherdidI.I’mjustastiredasyouare!2.Importantsentences48CouldIgooutfordinnerwithmyfriends?Sure,thatshouldbeOK.Couldwegetsomethingtodrinkafterthemovie?No,youcan’t.Youhaveabasketballgametomorrow.Couldyoupleasetakethedogforawalk?OK,butIwanttowatchoneshowfirst.Couldyoupleasetakeouttherubbish?Yes,sure.阅读下列句子，观察问句的用法及回答。CouldIgooutfordinnerwith49在表示请求帮助或请求允许的疑问句中，常用could代替can，以表示礼貌，委婉或不确定的语气，而can则不具备这些语气。这种情况下不能把could看作can的过去式。以上两句中用could是为了表示礼貌的请求。表示请求帮助或请求允许时，除了can,could之外，还可以用may，句子的表达方式也各有不同，可以用不同的方式来表示同一个概念。例：在表示请求帮助或请求允许的疑问句中，常用co50①Could/Can/MayIuseyourcarforaday?②IwonderifIcoulduseyourcarforaday?

对于①、②句所作允答可以各种各样，如同意可以说Yes或Sure或Certainly，还可说Yes,(do)please.或Ofcourse.(youmay/can).或Goahead,please.或That’sOK/allright;如果不同意，可以说I’msorryyoucan’t.或I’mreallysorry,butIhavetouseittoday.要避免说No,youcan’t.这样显得很不礼貌。否定回答通常用委婉语气。①Could/Can/MayIuseyourcar51③DoyoumindifIuseyourcarforaday?

对于句③所作回答可以说Nevermind./Notatall.表“不介意”。不能用Yes./Sure./Ofcourse./Certainly.等。无论肯定还是否定应答中，要避免使用could，要用can或may。因为应答须用确定的语气。而could在表请求的问句中是为了表示礼貌或委婉语气，用在应答中则成了不确定语气，与情理不符。所以应答中不说Yes,youcould.或No,youcouldn’t.而要说Yes,youcan.或Sorry./No,youcan’t.③DoyoumindifIuseyourca52helpwithhouseworkandchoresathomehaveenoughstressfromschoolspendthetimeonschoolworkinorderto…Thereisnoneedforthemto…Itisimportantforsb.todosth.It’snotenoughto…developchildren’sindependenceThemore…,themore…Usefulphraseshelpwithhouseworkandchores53Unit4Whydon’tyoutalktoyourparents?Unit4541.IhavetostudytoomuchsoIdon’tgetenoughsleep.Discusstheseproblemsandgivesomeadvice.DiscussingWhydon’tyou

gotosleepearlierthisevening?1.Ihavetostudytoomuchso552.IhavetoomuchhomeworksoIdon’thaveanyfreetimetodothingsIlike.Whydon’tyou

gotoamoviethisevening?3.Myparentsdon’tallowmetohangoutwithmyfriends.Whynot

readsomeinterestingbooksathome?2.Ihavetoomuchhomeworkso562.情态动词should，could等should，shouldn’t

“（不）应该”，常用来提出请求和建议

could

“可以”可也用来给出建议。用could给出建议一般是指自己不太肯定，或者只是很多建议中的某一个，仅供参考；而should就是自己很肯定的或唯一的最好的一个建议。区别2.情态动词should，could等should，sh57should(shall)could(can)情态动词+v,可表示说话人的语气，可表达建议、要求、可能和意愿等，没有人称和数的变化。should(shall)could(can)582.Insteadhewatcheswhateverhewantsuntillateatnight.1)insteadadv.

代替；反而；却e.g.Ifwecan’tgotoHuashanMountain,we’llgotothecityofXi’anforthetrip.如果我们不能去爬华山，我们就去西安游玩。instead是副词，常置于句子末尾。insteadof是介词短语，后接名词、代词、动名词等。

辨析2.Insteadhewatcheswhatever59例如：Last

summer

I

went

to

Qingdao.

This

summer

I’m

going

to

Dalian

instead.去年夏天我去了青岛。今年夏天我要去大连。

Instead

of

going

to

Qingdao

I’m

going

to

Dalian

this

year.今年我打算去大连，而不去青岛。例如：602.AsfarasIknow,therearenoman-madeobjectsasbigasthis.

据我所知，再没有像它这样大的人造物体了。asfarasIknow是一个固定的表达方式，还可以说sofarasIknow，意思是“据我所知”。例如：AsfarasIknow,Jack’sgottwinsisters.就我所知，杰克有一对孪生姐妹。They’renotcomingtoday,sofarasIknow.他们今天不来了—就我所知是这样的。2.AsfarasIknow,thereare61根据课本内容，完成下列句子。1.你看上去很疲劳，怎么了？You____tired.What’s__________?2.昨晚，我一直学习到午夜，因此我没有睡足觉。

Istudied______________lastnightsoIdidn’t_________sleep.Grammarfocusuntilmidnightlookthemattergetenough根据课本内容，完成下列句子。1.你看上去很疲劳，怎么了？623.