新概念時(shí)態(tài)復(fù)習(xí)

Review！新概念（一）總復(fù)習(xí)時(shí)態(tài)一般現(xiàn)在時(shí)現(xiàn)在進(jìn)行時(shí)一般將來時(shí)一般過去時(shí)現(xiàn)在完成時(shí)一般現(xiàn)在時(shí)學(xué)習(xí)任何一個(gè)時(shí)態(tài)的步驟1.定義2.標(biāo)志性單詞3.句子的構(gòu)成結(jié)構(gòu)4.句型轉(zhuǎn)換（肯定句，否定句，一般疑問句，肯定回答及否定回答，特殊疑問句）

Grammarinuse一般現(xiàn)在時(shí)實(shí)義（行為）動(dòng)詞的一般現(xiàn)在時(shí)定義經(jīng)常性,規(guī)律性或習(xí)慣性的動(dòng)作或狀態(tài)。alwaysusuallyoftensometimesseldomneveralwaysusuallyoftensometimesseldomnever總是通常經(jīng)常有時(shí)很少?zèng)Q不標(biāo)志詞1AdverbsoffrequencyIalways/usually/oftensometimes/seldom/nevergotoschoolonfoot.IgototheEnglishClubeveryday.twiceaweek.OnSaturdays,Onceamonth,Igotothepark.標(biāo)志詞2：everyday(每一天)twiceaweek(一周兩次)onsaturdays(每周六)1、我們每天都上學(xué)。2、有時(shí)我們踢足球。3、我們總是在學(xué)校吃晚飯。4、他通常和爺爺一起玩象棋。Wegotoschooleveryday.Wesometimesplayfootball.Wealwayshavedinneratschool.Heusuallyplayschesswithhisgrandfather.人稱單三對(duì)動(dòng)詞單三第一人稱：我，我們（I，we）第二人稱：你，你們（you）第三人稱：除了第一第二人稱，其他都是第三人稱。第三人稱單數(shù)：男他,女她,動(dòng)物它(he.she.it)，某人，某物，某件事第三人稱復(fù)數(shù)：theyKittyandJoehe.she.itKitty.Petermyuncleadog.adeskAcatmyschool第三人稱單數(shù)你能分辨出第三人稱單數(shù)嗎？2.Alice4.twooranges6.he8.ice-cream10.they12.theboy14.it16.thegirls

1.she3.KittyandJoe5.we7.hisfather9.I11.thecat13.Peter15.myparents動(dòng)詞單三的變化規(guī)則：1、一般動(dòng)詞后加s.

2、以s,x,ch,sh,o結(jié)尾，后加es.

3、輔音字母+y結(jié)尾的單詞,去y,加ies.

2).變化規(guī)則如：reads,plays,works如：watch---watchescatch----catchesdo---doesgo---goes如：fly-flies

study--studiesdrink________go__________stay________make________look_________have_________pass_______carry_________come________watch______plant_______fly________study_______brush________do_________teach______變動(dòng)詞單三drinksgoesstaysmakeslookshaspassescarriescomeswatchesplantsfliesstudiesbrushesdoesteaches

用動(dòng)詞的適當(dāng)形式填空1.

Weoften_____(play)ontheplayground.2.

He______(get)upatsixo’clock.playgets

用動(dòng)詞的適當(dāng)形式填空3.She____(go)toschoolateighto’clock.4.Heusually_____upat17:00.(get)5.She____(live)inBeijing.goesgetslives6.

Danny___________(study)English,Chinese,Maths,ScienceandArtatschool.7.

Mikesometimes_______(go)totheparkwithhissister.8.

Ateightatnight,she________(watch)TVwithhisparents.studiesgoeswatches變否定句..實(shí)義動(dòng)詞的否定助動(dòng)詞don’t和doesn’t變否定句：IlikeEnglish.I__________English.ShelikesEnglish.She__________English.don'tlikedoesn'tlikedon’t/doesn’t+動(dòng)詞原形1.TomandJill________(notgo)toschool.2.We____________(notwatch)TVeveryday.3.Mike________________(notgo)tothezooeveryday.4.They______________(have)thesamehobby.don’tgo

don'twatch

don'thavedoesn'twatch一般疑問句：Welikeourclass.____you_____ourclass?Shelikesourclass.____she_____English?likelikeDo/Does提前+主語+動(dòng)詞原形?DoDoesEx1.請(qǐng)做練習(xí)1.HerparentsliveinShanghai.否:Herparents_____________inShanghai.疑：_____herparents______inShanghai?.2.YoustudyEnglish.否：You________studyEnglish.疑：______youstudyEnglish?3.Howoften_____Tom______football?A.is,playB.do,playC.does,playD.does,playsdon’tliveDolivedon'tDoCⅣ.特殊疑問句特殊疑問句在考試中涉及的比較多，主要以選擇和轉(zhuǎn)換句型為主，首先要掌握一些常用疑問詞的意思如：what（什么）,when,whattime（什么時(shí)間）,who（誰）,where（在哪里）,why（為什么）,how（怎樣）,howmany+可數(shù)名詞的復(fù)數(shù)（多少），howlong（多長時(shí)間）,howoften（多久一次）等，其次掌握它的語序，即就是特殊疑問詞+一般疑問句語序特別注意如畫線部分為動(dòng)詞的話要用What…do?Eg:Ioftenbrushmyteethat7.Whatdoyouoftendoat7?一般現(xiàn)在時(shí)的助動(dòng)詞dodoes主語為非第三人稱單數(shù)肯定句：主語+動(dòng)詞原形+其他否定句：主語+don’t+動(dòng)詞原形+其他一般疑問句：Do+主語+動(dòng)詞原形+其他？肯定回答：Yes，主語+do.否定回答：No,主語+don’t.主語為第三人稱單數(shù)肯定句：主語+動(dòng)詞單三+其他否定句：主語+doesn’t+動(dòng)詞原形+其他一般疑問句：Does+主語+動(dòng)詞原形+其他？肯定回答：Yes，主語+does.否定回答：No,主語+doesn’t.注意：do和does后要加動(dòng)詞原形

Grammarinuse現(xiàn)在進(jìn)行時(shí)1.含義：表示此時(shí)此刻正在進(jìn)行發(fā)生的動(dòng)作或存在的狀態(tài)。2.標(biāo)志詞：look,listen，now,。3.構(gòu)成:主語+be（am,is,are)

+動(dòng)詞ing

現(xiàn)在進(jìn)行時(shí)的含義與構(gòu)成He

isreading

abook.2.否定句：直接在be后加not.

如：Iamwriting.Iamnotwriting.現(xiàn)在進(jìn)行時(shí)的句式1.肯定句:主語+be+v-ing+其它.

如:Iamreadingabook.3.一般疑問句及回答:

問句：有be，直接把be提前?？隙ɑ卮?Yes,主語+be

否定回答:No,主語+be+not-----—I’mdrawing.-----Areyoudrawing?-----Yes,Iam./No,I’mnot.4.特殊疑問句,由“疑問詞+一般疑問句”What…doing?

構(gòu)成eg:Heisworking.-Whatishedoing?現(xiàn)在分詞的構(gòu)成：1.直接加–ingeg:look

-looking.2.如果動(dòng)詞末尾有不發(fā)音的e,則去e加–ing.eg:skate-skating3.以重讀閉音節(jié)結(jié)尾,輔元輔漢堡包結(jié)尾的動(dòng)詞,

應(yīng)雙寫末尾字母,再加–ing.

eg:sit-sitting.4.以ie結(jié)尾，把ie變y加ing。lie-lyingdie-dyingtie-tying

口訣教你學(xué)doing

進(jìn)行時(shí)很好記,be加動(dòng)詞-ing;

直加雙寫去啞e,分詞構(gòu)成須仔細(xì);

別說be詞無詞義,主語和它最親密;

變疑問be提前,否定not再后添;

何時(shí)要用進(jìn)行時(shí)look,listen,now標(biāo)志.

寫出下列動(dòng)詞的分詞形式

talk_____sleep_____watch_____sit_____listen______make_____laugh______lie_____cry______sing_____cut______write_____

talkingsleeping

watchingsitting

listeningmaking

laughinglying

cryingsinging

cuttingwriting一.用所給動(dòng)詞的適當(dāng)形式填空.1.Look!Thecat____________(run).2.They______________(have)breakfastnow.3.Tom____________(play)thepianointhelivingroomnow.4.Listen!They______________(sing)intheclassroom.isrunningarehaving

isplaying

aresinging三.句型轉(zhuǎn)換1.Iamwateringtheflowers.(否定句)2.She’sjumpingnow.(一般疑問句)3.Theboysareplayingbasketball.(劃線提問)4.Heisdoinghishomeworknow.(一疑)Iamnotwateringtheflowers.Isshejumpingnow?Whataretheboysdoing?Ishedoinghishomeworknow?

Grammarinuse一般將來時(shí)1.定義：表示將來某一時(shí)間發(fā)生的動(dòng)作或狀態(tài)，或計(jì)劃打算將要發(fā)生的動(dòng)作或狀態(tài)。2.標(biāo)志詞：tomorrow，next等。3.構(gòu)成:主語+will(將要）+動(dòng)詞原型+其他。

一般將來時(shí)的定義與構(gòu)成Kitty

willwearglassesinthefuture.一般將來時(shí)的基本結(jié)構(gòu)：1.主語+will(將要）+動(dòng)詞原型+其他2.主語+be（am,is,are）goingto＋動(dòng)詞原形常見的時(shí)間狀語：next(下一個(gè)）nextTuesdaynextdaynextweeknextmonthnextyeartomorrow(明天）tomorrowmorningtomorrowafternoontomorroweveningthedayaftertomorrowinafewsecondsinthefutureinfiveyears一般將來時(shí)的基本結(jié)構(gòu)：主語+will(將要）+動(dòng)詞原型+其他Will

引導(dǎo)的一般將來時(shí)用于描繪未來的事情；will還可以表示對(duì)未來的設(shè)想或主觀推測。Will引導(dǎo)的一般將來時(shí)，本身沒有人稱和數(shù)的變化,而且后面接動(dòng)詞原形。一般將來時(shí)句型結(jié)構(gòu)：1.肯定句：主語＋will

＋動(dòng)詞原形+其他.KittywillliveinBeijingin15years.2.否定句：主語＋willnot/won’t＋動(dòng)詞原形+其他.3.一般疑問句：Will

＋主語＋動(dòng)詞原形+其他?一般將來時(shí)的構(gòu)成Kittywillnot/won’tliveinBeijing.

WillKittyliveinBeijing.Will引導(dǎo)的一般將來時(shí)，本身沒有人稱和數(shù)的變化,而且后面接動(dòng)詞原形。一般將來時(shí)句型結(jié)構(gòu)：4.肯定回答：Yes，主語（代詞）+will.否定回答：No，主語（代詞）+won’t.5.特殊疑問句結(jié)構(gòu)：疑問詞+will+主語+其他？KittywillliveinBeijingin15years.一般將來時(shí)的構(gòu)成Yes,shewill.No,shewon’t.WherewillKittylivein15years?They

willhave

anEnglishparty

nextweek.變特殊疑問句WhenwilltheyhaveanEnglishparty？Whowill

haveanEnglishpartynextweek?Whatwilltheyhave

nextweek?②③①①②③特殊疑問句結(jié)構(gòu)：特殊疑問詞+will+主語+動(dòng)詞原形+其他？Whatwilltheydo?Whatwilltheydo?rideabikeplayfootballTheywillrideabike.WhatwillHuiTailangdo?WhatwillHuiTailangdo?skidanceHewill

ski.1.Alicewilldoherhomeworknextweek.(改否定句)

Lucy_______herhomeworknextweek2.Hewillfindsomemeatinthemachine.(變一般疑問句)___he_______meatinthemachine?3.Shewillgotheretomorrow.(對(duì)劃線部分提問)________she_____there?won’tdoWillfindanyWhenwillgo主語+be（am,is,are)

goingto+動(dòng)詞原型+其他。

一般將來時(shí)構(gòu)成2He

isgoingtoswimtomorrow.句型結(jié)構(gòu)：肯定句結(jié)構(gòu)：主語+begoingto+動(dòng)詞原型+其他.

He

isgoingtoreadabooktomorrow.

否定句結(jié)構(gòu)：主語+be（not)goingto+動(dòng)詞原型+其他.

一般疑問句結(jié)構(gòu)：

Be+主語+goingto+動(dòng)詞原型+其他?

特殊疑問句結(jié)構(gòu)：疑問詞+begoingto+主語+其他？He

isgoingtoreadabooktomorrow.

一般將來時(shí)thefuturetenseHe

isnotgoingtoreadabooktomorrow.Ishegoingtoreadabooktomorrow?Whatishegoingtodotomorrow?肯定回答及否定回答:肯定回答:Yes,主語+be

否定回答:No,主語+be+not-----—He

isgoingtoreadabook.-----Ishegoingtoreadabook?

-----Yes,heis./No,heisn’t.____Petergoingtobuyabook?

Yes,_____is.

Are,itIs,heIs,itAre,heBI’mgoingtoswim.（就劃線部分提問）Whatareyougoingtodo?Thegirlisgoingtowashherhands.

(變?yōu)榉穸ň?Thegirlisn’tgoingtowashherhands.Iamgoingtopanititpink.

（就劃線部分提問）Whatcolourareyougoingtopaintit?

一般將來時(shí)的構(gòu)成：

主語

+begoingto+地方/動(dòng)詞原形+(將來時(shí)間)…..

火眼金星?？纯聪旅娴木渥硬≡谀睦锬?？1.Wearegoingtovisitinggrandparentstomorrow.2.Shegoingtogotomorrow.3.Heisgoingtoreadsbooksthisnoon.4.Myparentsisgoingtoswimnextweek.5.Joeisgotothepark.visitisreadis改為aregoingGrammarinuse一般過去時(shí)定義：一般過去時(shí)表示過去某一特定（與現(xiàn)在無關(guān)）的時(shí)間發(fā)生的動(dòng)作或存在的狀態(tài)，與具體的表示過去的時(shí)間狀語連用。標(biāo)志詞：

1.last系列eg:lastweek

2.ago系列eg:twodaysago

3.yesterday系列eg:yesterdaymorning

thedaybeforeyesterday以及justnow（剛才）等。TheSimplePastTenselastdaynightweekmonthMondayyesterdaymorningafternooneveningthedaybeforeyesterday1.與last

連用2.與yesterday

連用：用于一般過去時(shí)的時(shí)間狀語3.與ago

連用：twominutesthreehoursfivedaysoneweeksixmonthsfouryearsago所有時(shí)態(tài)都是通過動(dòng)詞變化來表現(xiàn)的I________12yearsoldthisyear.我去年11歲.I___________11yearsoldlastyear.He___________inBeijingnow.他昨天在上海。He___________inShanghaiyesterday.他現(xiàn)在在北京。Pleaselookatthesentences我今年12歲.amwasiswasThey____inChinatoday.他們今天在中國。They____inJapanyesterday.他們昨天在日本。areweream/iswasarewereHewasaboy30yearsago.Heisan

actor

now.Shewasagirl20yearsago.Sheisanactressnow.Hewasababymanyyearago.Heisabasketballplayernow.一般過去時(shí)的句型構(gòu)成形式：一、含有（be動(dòng)詞——am/is/are）的一般過去時(shí)形式：e.g.

①

I

was

late

yesterday.

昨天我遲到了。②They

werehappythismorning.今天上午他們很開心。③He

wasafarmersixyearsago.他六年前是一名農(nóng)民。

④I

wasinBeijinglastmonth.我上個(gè)月在北京。⑤Myfriends

sosad.were我的朋友們很傷心。?否定句：主語+was

/were+not（wasn’t/weren’t）…。?疑問句：Was

/Were+主語

+…？?肯定句：主語+was

(were)

+…?？隙ɑ卮穑篩es,主語was/were.否定回答：No,主語wasn’t/weren’t.be動(dòng)詞的過去式是was、are是were肯定句：主語+was/were+yesterday/justnow否定句：主語+wasn’t/weren’t其他.一般疑問句：was/were+主語+其他…?

回答：Yes,主語+was/were/.No,主語+wasn’t/weren’t一般過去時(shí)的時(shí)態(tài)構(gòu)成特殊疑問句：特殊疑問詞+be過去式+主語+其他？Wherewereyouyesterday?

含有be動(dòng)詞的過去時(shí)

改否定句：be動(dòng)詞后+not

someany

改疑問句：be動(dòng)詞提前

1.someany2.I,weyoumy,ouryour

只有問句中才要改人稱。1Mysisterwas28twoyearsago.

肯定句：主語+was\were+其它否定句：Mysisterwasn’t28twoyearsago.一般疑問句：Wasyoursister28twoyearsago?特殊疑問句：Howoldwasyoursistertwoyearsago?2Iwasathomejustnow.否定句：一般疑問句：特殊疑問句：Iwasn’tathomejustnow.Wereyouathomejustnow?Where

wereyoujustnow?Exercise他們昨天在北京。他去年還是個(gè)學(xué)生。你昨晚在家嗎？你們昨天在哪兒？TheywereinBeijingyesterday.Hewasastudentlastyear.Wereyouathomelastnight?Where

wereyouyesterday?1.Mike____(be)happyyesterday.2.Yourbrother____(be)athomejustnow.3.They____(be)hereamomentago.4.Helen_______(be)10lastMonday.5.They____(be)atschoolyesterday.6.She____(be)inBeijingtwodaysago.waswaswerewaswerewas練習(xí)用

yesterday改寫下列句子。1.Iamatschoolnow.2.Mysonisathometoday.3.Weareattheofficenow.4.Thereisabusontheroad.5.Arethereanycarshere?6.Herearesomebutterflies.oftenyesterdayplayfootballplayedfootballoftenyesterdaywashmyfacewashedmyfaceyesterdayoftenbrushmyteethbrushedmyteethoftenyesterdaygetupatseveno’clockgotupateighto’clockoftenyesterdaygototheparkwenttotheparkText:陳述句：主語+動(dòng)詞過去式+其他

Hetelephonedmefourtimesyesterday.否定句：主語+didn’t+動(dòng)詞原形+其他Hedidn’ttelephonemefourtimesyesterday.一般疑問句：Did+主語+動(dòng)詞原形+其他?

Didhetelephoneyoufourtimes?肯定回答：Yes,hedid.否定回答:No,hedidn’t.=No,hedidnot.特殊疑問句：特殊疑問詞+一般疑問句

Whatdid

hedoyesterdaymorning?一般過去時(shí)的構(gòu)成方式第二種：含實(shí)義動(dòng)詞【動(dòng)詞過去式的變化規(guī)則】①一般情況下，在動(dòng)詞原形后直接加ed。如：looked,played，

wanted，needed。(在清輔音后讀/t/；在濁輔音和元音后讀/d/；在/t/,/d/后讀/id/。②以不發(fā)音的字母e結(jié)尾的動(dòng)詞，直接加d。如：lived,liked?！緞?dòng)詞過去式的變化規(guī)則】③重讀閉音節(jié)單詞需雙寫最后一個(gè)輔音字母，再加ed。如：stopped,shipped。④以輔音字母+y結(jié)尾的動(dòng)詞變y為i，再加ed。如：studied，worried。【過去式的變化規(guī)則】⑤有些動(dòng)詞不符合上面的規(guī)則，需要特殊記憶.如am(is)-was,are-were,go-went,eat-ate,swim-swam,say-said,see-saw,have,has-had

do-did,get-got等.1.look2.live3.stop

4.go5.hope6.trip

7.call 8.eat9.want10.are11.go12.have13.do14.get 15.come16.say17.see18.put19.read

20.takelookedlivedstoppedwenthopedtrippedcalledatewantedwerewenthasdidgotcamesaidsawputreadtook寫出下列動(dòng)詞的過去式寫出下列過去式am,is——are——do,does——go——have——eat——meet——come——sit——run——stop——read——see——make——play——like——study——二.寫出下列過去式am,is——wasare——weredo,does——didgo——wenthave——hadeat——atemeet——metcome——camesit——satrun——ranstop——stoppedread——readsee——sawmake——madeplay——playedlike——likedstudy——studied1.Ididmyhomeworklastnight.肯定句：主語+動(dòng)詞過去式+其它否定句：一般疑問句：特殊疑問句：Ididn’tdomyhomeworklastnight.Didyoudoyourhomeworklastnight?Whatdidyoudolastnight?2.Jimwateredsomeflowersamomentago.否定句：一般疑問句：特殊疑問句：3.Mymotherwentforawalkintheparklastweekend.否定句：一般疑問句：特殊疑問句：Jimdidn’twateranyflowersamomentago.DidJimwateranyflowersamomentago?WhatdidJimdoamomentago?Mymotherdidn’tgoforawalkintheparklastweekend.Didyourmothergoforawalkintheparklastweekend?Whatdidyourmotherdointheparklastweekend?句型轉(zhuǎn)換1Iwasatacamplastweekend.（改為一般疑問句）

____________atacamplastweekend?2Thereweresomeorangesinthebagjustnow.（改疑問句）

______________________orangesinthebagjustnow?3MaryiswatchingTVnow.（用yesterday改寫）

Mary________TV________.4WehadagoodtimelastSunday.（改否定句）

We______________agoodtimelastSunday.5Mysistercookedsomenicefoodthismorning.（劃線提問）

_______________________sister______thismorning?WereyouWerethereanywatchedyesterdaydidn’thaveWhatdidyourdo1.Lucydidherhomeworkathome.(改否定句)Lucy_______herhomeworkathome.2.Hefoundsomemeatinthefridge.(變一般疑問句)___he_______meatinthefridge?3.Shestayedthereforaweek.(對(duì)劃線部分提問)____________she_____there?4.Therewassomeorangeinthecup.(變一般疑問句)____there____orangeinthecup?didn’tdoDidfindanyHowlongdidstayWasany按要求變換下列句型,每空一詞。5.Therewassometeainthecup.（變一般疑問句)_____there_____teainthecup?6.Lucydidherhomeworkathome.（改否定句）

Lucy______________herhomeworkathome.7.Hehadlunchatschool.(對(duì)劃線部分提問)_____________he_______lunchatschool?8.Theyhaddinneryesterday.(對(duì)劃線部分提問)______________they_______yesterday?9.He’scleaninghisbikenow.(用justnow改寫)He________hisbikejustnow.10.Wewereteachers.(用I換we)I_____ateacher.Wasanydidn’tdoWheredidhaveWhatdiddocleanedwasGrammarinuse現(xiàn)在完成時(shí)★現(xiàn)在完成時(shí)的定義和用法：（1）現(xiàn)在完成時(shí)表示過去某時(shí)發(fā)生的行為對(duì)現(xiàn)在產(chǎn)生的影響。即用過去發(fā)生的某個(gè)行為來說明現(xiàn)在的某種情況。

肯定句式：主語+have(has)+動(dòng)詞過去分詞否定句式：主語+have(has)+not+動(dòng)詞過去分詞一般疑問句：Have(Has)+主語+動(dòng)詞過去分詞？特殊疑問句：特疑詞+have(has)+主語+動(dòng)詞過去分詞？

-Haveyouhadlunchyet?你（已經(jīng)）吃午飯了嗎？

-Yes,Ihave.I’vejusthadit.

我剛剛吃過。（現(xiàn)在我不餓了）

（2）表示從過去某一時(shí)刻開始一直持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。這個(gè)動(dòng)作可能剛停止，可能仍然在進(jìn)行。常帶有for和since等表示一段時(shí)間的狀語。

Hehasbeentaughtheresince

2008.

他自2008年就在這兒教書。Ihaven'tseenherforfouryears.

我有四年沒見到她了?，F(xiàn)在完成時(shí)通常與表示不確定的時(shí)間副詞或短語連用如：ever曾經(jīng)never從不already已經(jīng)yet還just剛剛for+一段時(shí)間since+時(shí)間點(diǎn)since+2006自從2006年起、since+時(shí)間段+agosincetwoyearsago注意:現(xiàn)在完成時(shí)不能單獨(dú)與準(zhǔn)確時(shí)間連用，(如表示過去的時(shí)間狀語）如yesterday(morning、afternoon),last(morning、afternoon),ago等，除非與for,since連用.

for與since專項(xiàng)解析

現(xiàn)在完成時(shí)還可以描述發(fā)生在過去且一直延續(xù)到現(xiàn)在的動(dòng)作，這種動(dòng)作甚至有可能延續(xù)下去。在這種情況下，它一般與

for+時(shí)間段

since+時(shí)間點(diǎn)連用。

for與since專項(xiàng)解析HowlonghasIanlivedinthehouse?

伊恩在這幢房子里住多久了？He’slivedherefortwentyyears.

他在這里住了20年了。Whenhashebeenthere?

他是從何時(shí)起就在那兒的？Hehasbeentheresince1976.

從1976年起。

注意：for+一段時(shí)間表示某個(gè)動(dòng)作持續(xù)多長時(shí)間；since+某個(gè)時(shí)間點(diǎn)表示某個(gè)動(dòng)作是何時(shí)開始的。forsinceforsinceforforsinceforsincesince

already&yetalready“已經(jīng)”，用于肯定句；yet用于疑問、否定句的句尾，含有“仍然”，“還沒有”之意。Haveyoudoneityet?

Yes,Ihavealreadydoneit.Haven’tyoudoneityet?

No,Ihave’tdoneityet.不規(guī)則動(dòng)詞的過去式以及過去分詞

巧記規(guī)律AAA:put–put–putlet-let–letABA:come—came—comeABB:stand—stood—stoodABC:eat—ate—eatencost-cost-costread-read-readput-put-putcut-cut-cutlet-let-letset-set-set△AAA變化的單詞，結(jié)尾字母一般是t或d。

特殊：動(dòng)詞read,變化是read-read-read，但發(fā)音分別是[ri:d]-[red]-[ri:d]。

AAA有些動(dòng)詞的過去分詞與原形是一樣的:

run-ran-runcome-came-come

become-became-become

ABA原型過去式過去分詞例詞-eep-ept-eptkeep,sweep,sleep-ell-old-oldtell-d-t-tspend,send,build(建造)-ay-aid-aidsay,pay-n-nt-ntlearn,mean-ee--e--e-meet-ought-oughtbring(帶來),buy,think-aught-aughtcatch,teachABBABC原型過去式過去分詞例詞-eak-oke-okenspeak-ear-ore-ornwear-ow（aw）-ew-owngrow(種,生長),know,throw,draw-i--a--u-swim,drink,sing,begin-i--o--ndrive,rise,write現(xiàn)在完成時(shí)態(tài)特殊形式have/hasbeento曾經(jīng)去過某地回來了have/hasgone