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1、Don’teatinclass.Unit4SectionBReading祈使句一般用来表示请求、命令、劝说、号召、警告等。在祈使句中，通常省略第二人称主语you。肯定式以动词原形开头，否定式一般在动词原形前加don’t。祈使句Don'ttalk!Don'tfight!Don'tlistentomusic!Don'tplaycards!Don'tsleep!Don'tlookoutofthewindow!Don'ttalk!Don'tbenoisy!adj.吵闹的我们不能在教室大吵大闹。Wecan'tbenoisyintheclassroo
2、m.Wemustbequiet.Wehavetofollowtheserulesinourschool.v.遵守must没有人称和数的变化，haveto有人称和数的变化，当主语是第三人称单数时,用has to.must强调主观上的需要；haveto强调客观上的必要和外界的权威。汤姆不得不离开这个村庄。我必须打扫这个房间。Tomhastoleavethisvillage.Imustcleantheroom.must,haveto,can,can’t的区别：must强调主观上的需要；haveto强调客观上的需要。can可以；can’t不可以。
3、toomanyrulestoomuchhomeworktoomany+可数名词（复）toomuch+不可数名词Hemustdohishomeworkfirstwhenhegetshome.…Doyouhavesomefamilyrules?getshomeWhat’sthefamilyrule?Theycan'tplaybasketballonschoolnights.…onschoolnightsWhat’sthefamilyrule?Shehastoplaytheviolinforanhourafterdinner.…afterdin
4、ner,foranhour晚饭后我也不能轻松.YoulikeEnglish.Ilikeit,too.Myfathercan’tspeakEnglish.，mymothercan’tspeakit,either.Afterdinner,Ican’trelax,either.either表示“也”，用于否定句句末too表示“也”,用于肯定句句末。你喜欢英语，我也喜欢。我爸不会讲英语，我妈也不会。What’sthefamilyrule?HemustreadabookbeforehecanwatchTV.Hehastogotobedbeforet
5、eno’clock.before10Hehastogetupat6andmakesthebed.makethebed整理床铺Don'tleavev.留下adj.脏的Don'tleavethekeysonthetable!n.厨房leavesth+地点把某物留在某地thedirtydishesinthekitchen!别把你的钥匙留在桌子上！Ourparentsareverystirct.对某人严格的对某事要求严格bestrictwithsbbestrictindoingsth我们的数学老师对我们很严格。Ourmathteacherisst
6、rictwithus.玛丽对她的作业要求严格。Maryisstrictindoingherhomework.Iftheseareyourfamilyrules,howdoyoufeel?Whatcanyoudowhenyouareunhappy?v.感觉Whenyouareunhappyaboutsomething,whodoyouliketotalkto?Yourgoodfriend?Yourfather?Yourmother?Yourcousin?Yourteacher?YoucantalktoDrKnow.Heknowseveryt
7、hing.DearDr.KnowDr.为doctor（博士；医生；医师）一词的缩写形式，放于姓氏之前，表示对人的尊称。万事通博士Readthepassageandanswerthequestions.HowdoesMollyfeelabouttherules?Shefeelsterrible!adj.可怕的，非常讨厌的,糟糕的ReadthelettersandunderlinetherulesforMolly.DearDr.Know,Therearetoomanyrules!At6:00a.m.,mymomsays,“Getupnowan
8、dmakeyourbed!”Afterbreakfast,mymomalwayssays,“Don’tleavethedirtydishesinthekitchen!”Afterthat,Ir
