省一等奖课件《U4-Inventions-and-Inventors》-课件1

Unit4InventionsandInventors一、本周教学重点：1.复习被动语态2.情态动词表达疑心、确定和可能。3.重点词汇二、具体内容：〔一〕被动语态：1.一般现在时被动语态根本结构：主语＋am/is/are＋过去分词Thefoodisplacedintheoven.Theyareturnedintoheat.2.一般过去时被动语态根本结构：主语＋was/were＋过去分词MagicSquareswereinventedinChina.PapermakingwasintroducedintoJapanin610.3.情态动词被动语态根本结构：主语＋can/should/must＋be＋过去分词Schooluniformmustbewornatalltimes.4.一般将来时被动语态根本结构：主语＋will＋be＋过去分词Itcan’tbearadiobecauseit’stoobigtobearadio.Thereportwill______〔finish〕intwodays’time.Milkshould_______〔keep〕inthefridge.Whiteclothesandcoloredclothesshouldnot_______〔wash〕together.Schooluniformsneedn’t______〔wear〕atalltimes.〔二〕情态动词：当不是很确定时，用might或may.〔might比may更不确定〕Whoknowswhatwillhappen.Youmayevenhavemarriedbythen.Itmightbeatoolforcuttingthings.Idon’tknow.当确定某件事是唯一的可能时，用must.Itmustbesomesortoftoy.当确信不可能发生时，用cannot.Itcannotbearadiobecauseit’stoobigtobearadio.Ex.Completethesentenceswithmightbe/maybe,cannotbe,ormustbe.1.Thisexam_________toodifficultforthestudents.Idon’tthinktheycanfinishit.2.It_________abookforchildren.Therearemanycartoonsinit.3.It_________true.Ithinkyoumadeamistake.4.Mr.Smith________________inLondon,Paris,orTokyo.Nooneknowsforsure.5.That_________John.HeisinNewYorknow.6.Didyouhearthedoorbell?It_______Nicholas.Iamexpectinghim.〔三〕重点词汇：1.Inmanybigcitiesintheworld,theoveruseofcarsisthoughttobeoneofthemajorcausesofairpollution.over＋名词/形容词，表示“过多，过于〞Theover-loadtruckcausedaseriousroadaccident.Shealwaysworksovertime,soshehastoleaveherbabycaredforbyhermother.bethoughttobe被认为，被看作Sheisthoughttobethetopstudentinourclass.Janeisthoughttobebusypreparingfortheexam.2.Howeverwearealsowarnednottoaskforprettycolors,becausethecarwillcomeingrayonly.warnNoonewarnedhimofthedanger.Iwarnedhernottogetclosetothedogbutshewouldn’thearofit.3.Otherexpertsaresurethatthefuturewillbehappy.besurethat…Iamsurethatsmokingwillhurtyou.AreyousurethatJohnwillcomethisafternoon?4.Ifgasisinshortsupply,thesupercarwillrunonwater.beinshort…Thecheaperitis,thebetter.I’mshortofmoney.on靠Hefindsitdifficulttoliveonhissalary.Theylivemostlyonvegetablesfromtheirgarden.5.Asarule,softfruitslikestrawberries,etc,aredifficulttofreeze.asarule一般来说，通常是Asarule,shegoesoutearlyeveryeveninglookingforwork.Asarule,wegethomeat6.6.Youshouldbecarefulthefirsttimeyouwashyourshirtbecausethebluecolormightcomeoutandmarkthewhitepart.comeout开花，出版，退色，计算出来Thismagazinecomesoutmonthly.Someflowershavebeguntocomeout.Iwashedtheshirttwicebuttheinkstillhasn’tcomeout.7.observe观察Iobservedaletteronthetable.Didyouobserveanythingstrangeinthatboy’sbehavior?Exercise［课堂练习］I.单项选择。1.Haveyouever

thiskindofmooncakes?

A.eat

B.eats

C.eating

D.eaten2.Theknivesareused

cuttingthings.

A.in

B.to

C.for

D.of3.Theyareusedfor

thestyleofashoe.

A.change

B.changes

C.changing

D.changed4.–MustIstayathome,Mum?

-No,you

.

A.needn’t

B.mustn’t

C.don’t

D.maynot5.Sheaskedthem

thingsabout.

A.nottolitter

B.don’tlitter

C.notlitter

D.nolitter6.I’mnotsure

hewillcomebackhometomorrowornot.

A.when

B.what

C.whether

D.where7.Look.These

bedinosaureggsbecausetheyarethebiggestofall.

A.must

B.can

C.should

D.may8.–Iwastoldtotakeumbrellawithme.

--Oh,no.lookatthesky.It’ssunnyand

rain.

A.must

B.can’t

C.may

D.needn’t9.Thelightintheofficeisoff.Theteacher

betherenow.

A.may

B.can’t

C.mustn’t

D.mustII.完成句子：1.警察阻止孩子们在街上玩耍。Thepolicemanstoppedthechildren

inthestreet.2.去年他去日本学医。Lastyear,hewenttoJapan

.3.她每天早起以便能读英语。Shegetsupearlyeveryday

shecanreadEnglish.III.连词成句1.Themoney/count/everyevening_____________________________________________________2.Thechildren/takecareof/inthekindergarten_________________________________________3.English/speak/everywhere_________________________________________________________Thankyou!Bye!第二课时一般现在时的用法

1.表示现在的状态：

Myfatherworksinaschool.

2.表示经常或习惯性的动作：

Igetupat6:30everyday.HereadsEnglisheverymorning.

3.普遍真理和自然规律：

Themoongoesaroundtheearth.

Thegirlapples.Thetwoboysapples.eatseat说说看看Mikebasketball.Theboys

basketball. playsplayXiaomei

toschool.Thesisters

toschool.goesgoMaryshopping.Herfriendsshopping.goesgo行为动词的一般现在时：

肯定句:I/We/You/TheyIstayathomeonSaturdays.Theylikeplayingbasketball.

He/She/ItHestaysathomeonSaturdays.Lucy

likesplayingbasketball.当主语为第一人称、第二人称或者第三人称复数时，一般现在时的谓语动词用原形；当主语为第三人称单数时，动词需要使用第三人称单数形式。第三人称单数---动词变化1.一般在词后加s.

如:comes,spells,talks,dances2.

以s,x,sh,ch结尾的动词后加es.

如:watches,washes,finishes3.

辅音字母+y结尾:变y为i+es.

如:study-studies,try-tries4.以o结尾加es.如：does,goes5.特殊：have-hasPuttheseverbsintothecorrectgroups.carry,do,eat,exercise,get,play,read,run,start,watch

-s-es-iescallsgoestidiescarriesdoeswatcheseats,getsexercisesplays,readsruns,starsExerciseWe________lunchatschool.I_________myteethandthen_______tobedat22:00.Mysister_________tobedat22:30.Mymum____________at6:30.I___________at7:00.At7:30,we__________breakfast.At8:15,we________toschoolwithourdad.He__________inthehospitalnearourschool.Afterdinner,I________myhomeworkandmysister____________TV.havebrushgogoesgetsupgetuphavegoworksdowatches否认句：I/We/You/TheyIdon’tstayathomeonSaturdays.Theydon’tlikeplayingbaske