***Module11WayoflifeUnit3LanguageinuseGuessthewordsfromthismodule.Youusethemtoeatsomething.ExamplechopsticksLead-inYouuseittosaveyourmoney.Youuseittoplay.Youwearitonyourhead.Youuseittolookupnewwords.Somethingforyoutowatch.Youuseittoplaychess.pursetoybaseballcapdictionaryDVDchessset表示主观的义务和必要,主要用于肯定句和疑问句中,意思为“必须……，得……，要……”；由must引起的疑问句，肯定回答要用must或haveto,否定回答要用needn’t或don’thaveto,意思是“不必”；must的否定形式mustn’t表示禁止，意思是“不能，不许”。Languagepracticemust的用法e.g:Wemustfindagoodmethodtolearncomputerwell.—MustIfinishthetaskrightnow?—Yes,youmust./Yes,youhaveto.(—No,youneedn’t./No,youdon’thaveto.)Youmustn’tcomeherewithoutpermission.2)表示肯定的猜测，常用于肯定句中，意为“一定是,必然……”。e.g:Yoursistermustbeadoctorinthishospital.(对现在的猜测)Hemustbereadingnewspapersinthereadingroomnow.（对正在进行的猜测）Itmusthaverainedlastnight,forthegroundiswet.（对过去的猜测）can的用法can的否定形式为cannot，缩写为can’t。1)表示能力。Ican’tswim.Canyoudrive？注意：can表示能力可和beableto互换使用，且后者有更多的时态，beableto常被用来表示can所不能表示的将来或完成的概念。Theywillbeabletorunthismachineontheirowninthreemonths.2)表示可能性，意思是：可以，可能。Thatbigcinemacanseat2,000people.Hecanbeveryfriendlyattimes.3)表示允诺，意思是：可以，能够。YoucanhavethebookwhenIhavefinishedit.CanIuseyourpen？4)表示惊异、不相信、猜测等（用于疑问句、否定句或感叹句中），意思是：会，可能。Thiscan’tbetrue.Canitbetrue？Schoolrules1.You_______belateforschool.2.You_______eatinthelibrary.3.You_______rideyourbikeintheplayground.4.You_______doyourhomework.5.You_______listentotheteacher.Completethesentenceswithmustormustn’t.mustn’tmustn’tmustn’tmustmustWorkinpairs.Telleachotherthreethingsyoumustdoathomeandthreethingsyoumustn’t.Areyourhomerulesdifferentorthesame?Imustvisitmygrandparentsonceaweek.Imustn’tsmoke.Imust…Imustn’t…HaveafreetalkModuletaskWriteadviceforforeigngueststoaChinesefamily.Whatmustyouwear?Whatmustn’tyouask?Whatpresentsmustyoubring?4.Whatpresentsmustn’tyougive?5.Whatmustyoudowhenyouvisitsomeoneathome?句型攻关1.你一定不要在中国新年的第一天打扫卫生。You_________________________onthefirstdayoftheSpringFestival.2.在街上你也不常听到人们大声喊叫。Andyoudon’toften_____people_______inthestreet.mustn’tdoanycleaninghearshouting3.新娘不能准时到达教堂,必须要晚几分钟。Thenthebride__________________thechurch_______________afewminuteslate.mustn’tarriveatontimebutHomeworkWritesomeadviceforforeignvisitorstoaChinesefamily.Confidenceinyourselfisthefirststepontheroadtosuccess.自信是走向成功的第一步。