九年級第一單元語法專練：need和should的用法第一部分：核心知識點(diǎn)梳理一should的用法1.should做助動詞：（1）shall的過去式，用于過去將來時（2）表示“將要”，用于第一人稱I/we2.sholud做情態(tài)動詞：（1）表示“應(yīng)該，應(yīng)當(dāng)”，沒有人稱和數(shù)的改變，后加動詞原型（相當(dāng)于oughtto）（2）表示委婉地提出意見和建議。Youshouldbrushyourteethbeforeyougotobed.（3）表示義務(wù)，責(zé)任。Weshouldstudyhard.二need的用法1.need做實(shí)義動詞：（1）表示“需要”，有人稱和時態(tài)的改變（2）needtodo：需要做某事：Ineedtogo.（3）needdoing：需要被…（等于needtobedone）:Thebagneedsrepairing.2.need做情態(tài)動詞：（1）表示“需要”，沒有人稱和時態(tài)的改變，后加動詞原型（2）作為情態(tài)動詞的need一般多用于否定和疑問句：Youneedn’tworry.NeedIanswerthequestion?第二部分：專項(xiàng)練習(xí)一用適當(dāng)?shù)那閼B(tài)動詞填空（can,must,may,need,should或者其適當(dāng)形式）1.You_______leaveyourcarhere.Can’tyouseethe‘Noparking’sign?2.You_______finishyoursoupifyoudon’tlikeit.3._____thisnewsbetrue?Ican’tbelieveit.4.---_______Ismokehere?---Sorry,butwearen’tallowsmokinghere.5.He_______betheactor,IhaveseenhimonTV.6.Ithinktoday’schildren_______learntorespecttheirelders.7.She_______swim,butIcan’t.8.Shesaidshe_______retire,butshewasnotsure.9.Theclothes_______washing,theylooksodirty.10.You_______push,thereisalotofroomonthebus.二選擇()1.We_______buildourcountryintoacountryofpeaceandwealth.AmightBshouldCcould()2.Dogs_______runthroughsoccergamesatthepark.It’sdangerous.AshouldBshouldn’tCneedDneedn’t()3.Tokeepchildrensafe,we_______putthethingslikeknivesmedicineawayinourhouse.AmayBshouldCcanDmight()4.Nowmostyoungpeoplelikeshoppingonlinebecausethey_______spendalotoftimegoingfromshoptoshop.Aneedn’tBcan’tCmustn’tDshouldn’t()5.InordertospeakEnglishbetter,we_______beafraidoffailure.AshouldBshouldn’tChavetoDcould()6.Let’stakeabus,littlechildren_______tickets.Aneedn’tbuyBneedn’ttobuyCdon’tneedbuyDneedn’tbuying()7.—Itnearlytookmeanhourtowalkhere.—Haveadrink,then.You_______bethirsty.

A.must B.should C.can()8.—Doyouhaveanyplansaboutthissummervacation?—I_______gotoAustraliaforvacation,butIhaven’tdecidedyet.

A.can’t B.must C.may()9.Pleasedon’tmakesomuchnoise.I_______hearwhatthespeakerissaying.

A.needn’t B.mustn’t C.can’t()10.—Excuseme,isthisthewaytothecinema?—Sorry,I’mnotsure.Butit_______be.

A.mustn’t B.might C.can’t()11.—Mom,mustIstaytherethewholeday?—No,you_______.You_______comebackafterlunch,ifyoulike.

A.mustn’t;can B.needn’t;must C.needn’t;may()12.—IsthatLucy’scar?—It_______behers.Shehasjustgoneforameeting.

A.can’t B.should C.mustn’t()13---Tom,don’tdrivetoofast,you_________hittheothers’cars.---OK.A．may B．needCmust D．haveto()14---MustIhandinallmymoney,Mum?---No,you_________.Youcanuseittobuysomeschoolthings.A．mustn’t B．can’tC．needn’t D．should()15---Susan,wouldyouliketogohikingwithusthisafternoon?---I’dloveto,butI_________studyforatest.A．may B．canC．will D．haveto三句型1.Imustgohomenow,it’stoolate.（變?yōu)榉穸ň洌__________________________________2.Ithinkhemustbeanengineer.（變?yōu)榉穸ň洌__________________________________3.Youshouldfinishyourhomeworkfirst.（否定句）___________________________________4.--