专题九情态动词一、用恰当的情态动词填空。1.（2023抚顺改编）Thelovelyboycouldridethebikeattheageofsix.2.（2023江苏无锡改编）Oh，comeon！MustyoudoubteverythingIsay？I’mnotathree-year-old！3.（2023北京改编）—MustIstayhereandwaitforyou？—No，youneedn’t.Youcangohomenow.4.（2023甘肃武威改编）—Ican’tfindmykeys.—Haveyoucheckedinyourjacketpockets？5.（2023天津改编）—WouldyouliketovisitTianjinUniversitytomorrow？—Sorry，I’mafraidIcan’t.I’llworkasavolunteerinmycommunity.二、（2023天津改编）用恰当的动词填空。Asmileshowsthatapersonishappy.Forexample，aperson1.maysmilewhenheorsheispleasedwithsomeprogressinstudies.Orapersonmightsmileifafriendtellsafunnyjoke.Thereareothergoodreasonstosmileoften.First，itiseasiertosmilethantoshowunhappiness.Infact，itonlytakes17muscles（肌肉）tosmile.Ontheotherhand，ittakes43musclestoshowunhappiness.Soyoumustbehappyifyougivethemusclesinyourfacearestandsmile！Second，smilesarenice.Peoplemaytrytolooknicebyexercisingorwearingniceclothes.However，peopleoftensayasmileisthebestthingaperson2.canwear.Thatisbecauseitiseasytobearoundsomeonewhoissmilingandhappy.Almostnoonewantstostaywithsomeonewhoisalwaysunhappy.Third，smileshavepower（感染力）.Bothsmilingandlaughing3.caneasilyandquicklyspreadfromonepersontoanother.Ifonepersonsmiles，peoplearoundhimorher4.maywanttosmile，too.Similarly，whenapersonlaughs，peopletend（往往会）tolaughwithhimorher.Ifapersonissad，thebestthingyou5.needtodoistoshareasmileoralaugh.Itmaybetheeasiestwaytocheersomeoneup.Finally，smilingandlaughingareverygoodforthebody.Eventhoughyouaresad，trysmiling.Youmightfindthatitwillbedifficulttostaysadforverylong！