初中八年级英语课件Section A Grammar focusa-4c 全市一等奖

现在完成时

PresentPerfectTense

Unit8HaveyoureadTreasureIslandyet?SectionAGrammarFocus4a-4cDidyouspendtimewithyourmom?Mandy&MomIhavefinished

.Ihavecleaned

.Ihavemade

.

Ihavefinished

.Ihavecleaned

.Ihavemade

.

allmyhomeworkalltheroomssomedeliciousfoodPresentPerfectTense(现在完成时)MandysaidIhavefinishedallmyhomework.SoIcanrelaxnow.Ihavecleaned

alltherooms.Now,theroomsareclean.Ihavemade

somedeliciousfood.Somomcanenjoythefoodnow.I

made

somefood.Momcanenjoyitnow.nowpast现在完成时表示_____发生的事情对______造成的影响或结果。过去现在Ihavemade

somedeliciousfoodformom.探索一：现在完成时的基本结构Ihavefinishedallmyhomework.I

havecleanedalltherooms.Ihavemadesomedeliciousfood.基本结构：主语+have+过去分词+其它

Mandy(have/has)finished

allherhomework.She

madesomedeliciousfood.She

cleaned

alltherooms.hashashas现在完成时：主语+have/has+过去分词+其它

第三人称单数Trytofindtherule.finishfinished

finished

动词原形过去式过去分词

规则变化-edcleancleaned

cleaned

makemademade不规则变化Doyouknowthepasttense(过去式)

andthepastparticiple(过去分词)ofthesewords?(P136)buyfindhearleavereadseetellPairworkseereadfindhearleavetellbuyread–read–readfind–found-foundhear–heard–heardleave–left–lefttell–told–toldbuy–bought–boughtsee–saw-seenReady?go

Henot

hasTheyhavecleanedalltherooms.探索二：现在完成时的句型转换

思考否定句在_____________后面加not。

notfinishedhishomework.

have或has

havenot=haven’thasnot=hasn’t探索二：现在完成时的句型转换

They

havecleanedalltherooms.He

has

finishedallhishomework.

Have?theyHas

?he思考一般疑问句把______________调到主语前面,回答时，也要使用_______________.

have或has

have或has—Yes,theyhave./No,theyhaven’t.—Yes,hehas.—No,hehasn’t.探索三：现在完成时的标志词Whatarethekeywordsforthepresentperfecttense?A:Ihavealreadyfinishedmyhomework.Haveyoufinishedyourhomeworkyet?B:No,Ihaven’tfinishedityet.现在完成时标志词：already,yet意思句型

already

yet“已经”肯定句“已经”一般疑问句“还（没）”否定句

E.g.Jimhas

already

finishedhiswork.（肯定句）

我们已经把教室打扫干净了。我们还没把教室打扫干净。你们已经把教室打扫干净了吗？We__________________upourclassroom.We______________upourclassroom_____._______________upyourclassroom_____?←（否定句）Jimhasn’tfinishedhisworkyet.←（一般疑问句）

HasJimfinishedhisworkyet?举一反三havealreadycleanedhaven’tcleanedyetHaveyoucleanedyet十秒抢答用already或yet填空：Ihavenotfinishedmyhomework______.Hehas________workedinthecityforeightyears.Haveyouseenthenewmovie_______?Stop!yetalreadyyet用所给词的适当形式填空：1.Tom____________(notfind)hiswatchyet.2.—_______you________(tell)Sandythegoodnewsyet?—No,I________.hasn’tfoundStop!Havehaven’ttold用所给词的适当形式填空：1.—_______yourbrother_______(leave)Shanghaiyet?—Yes,he_______.2.—When_______you________(buy)thedress?—Twoweeksago.Stop!Haslefthasdidbuy比较：1.Mike:Whatdidyoudolastweekend?Jenny:Isawanewmovie.

(只谈论上周末做的事情，不涉及现在)2.M:Wouldyouliketoseethemoviewithme?J:Thanksforyourinviting,butIhaveseenitalready.

(影响：因为已经看过了，所以现在不去看了)一般过去时现在完成时用法不同只表示过去的动作或状态(不涉及现在)表示过去发生的事情对现在造成的影响或结果(与现在有联系)Ihavevisitedmygrandparentsyesterday.Hehasfinishedhisworktwodaysago.时间状语不同yesterday,lastweek,…ago,justnowWhen…?…already,yet,ever,never,for,since…（注：不能与表示过去的时间状语连用）××综合提升1.—When______Tom______(leave)hisoffice?—He______aboutfiveminutesago.2.I______thebookclublastweekandI______twobooksalready.A.join;readB.joined;readC.joined;havereadD.joined;hasread

didleaveleft【即学即练】

1.A:Wouldyoulikesomethingtodrink?B:No,thanks.______________________.(just/drinksometea)2.A:Iheardyoulostyourkey.____________________?(find)B:No,notyet.3.A:DoyouknowwhenTomisleaving?B:____________________.(already/leave)4aUsethewordsinbracketstocompletetheconversations.(P60)I’vejustdrunksometeaHaveyoufoundityetHehasalreadyleftA:When________________?(leave)B:Thismorning.4.A:Isyoursistergoingtothemovieswithustonight?B:No.___________________________.(already/seethefilm)5.A:Whatdoyourparentsthinkaboutourplan?B:I____________________________.(not/tellthem/yet)didheleaveShehasalreadyseenthefilmhaven’ttoldthemyetSallyisabooklover.Herfavoritekindofbooksissciencefiction.Sheisinterestedinscienceandtechnology.

sciencefiction科幻小说科技ShealsolearnsFrench.法语[tekˈnɒlədʒi]4bFillintheblankswiththecorrectformsofthewordsinbrackets.loveshasread温馨提示：确认时间标志，用对时态结构！Sally _______(love)reading.Inthemorning,shereadsthenewspaperandintheeveningshereadsbooks.She_____already ______(read)morethan100differentbooks!Herfavoritekindofbooksissciencefiction.Sheisinterestedinscienceandtechnologyandlovestoimaginewillbefinishedwillwritehasn’tread温馨提示：确认时间标志，用对时态结构！whattheworld _______(be)likein50years.She__________(finish)readingabookaboutrobotslastweekand_____________ (write)abookreportaboutitnextweekforherFrenchclass.Everytimesheisinthelibrary,Sallylooksatthemanybooksshe_____________(notread)yetandshecan’twaittoreadthem!

can’twaittodosth迫不及待做某事Whathaveyoudoneforyourmother?Makeadialogueusingthepresentperfecttense.Children:HappyMother’sDay,Mom!Mother:Thankyou.C1:Look,Mom!Ihavemadeacardforyou.C2:Ihavecleanedalltherooms.C1:Ihavewashedalltheclothes.C2:AndIhavecookedabigdinnerforyou!M:Oh,you’resosweet!Thankyou,dears.GroupWorkChildren:HappyMother’sDay,Mom!Mother:Thankyou.C1:Look,Mom!I...C2:I…C1:I…C2:AndI…M:Oh,you’resosweet!Thankyou,dears.（3人一组进行情景表演。使用现在完成时句子越多，创新点越多，加分越多）Who'sthemostbeautifulwomanintheworld?Mother'sloveisthegreatestofall.

1.肯定句：Ihavealready

finishedmywork.否定句：Ihaven’tfinishedmywork

yet.一般疑问句：—Haveyoufinishedyourworkyet?—Yes,Ihave./No,Ihaven’t.2.肯定句：Jimhas

already

finishedhiswork.否定句：Jimhasn’tfinishedhisworkyet.一般疑问句：—HasJimfinishedhisworkyet?—Yes,hehas./No,hehasn’t.

Summary现在完成时：过去发生的事情对现在产生影响巩固练习1.—Yourshoes