人教版七年級下冊英語Unit4Don’teatinclass.SectionA

第2課時

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Canwe…?Yes,wecan./No,wecan’t,butwecan...Don’truninthehallways.Don’tfight.Whataretherules?Wemustbeontimeforclass.Canweeatintheclassroom?No,wecan’t,butwecaneatinthedininghall.Canwewearahatinclass?Yes,wecan./No,wecan’t.Doeshehavetowearauniformatschool?Yes,hedoes./No,hedoesn’t.Whatdoyouhavetodo?Wehavetobequietinthelibrary.GrammarFocus

祈使句祈使句是用來表示請求、命令或建議等的一種句型。在祈使句中，一般以動詞原形開頭，省略主語you，句末可以用感嘆號或句號。否定形式為在謂語動詞前加don’t。祈使句的類型Do型祈使句：實義動詞原形+其他.

Listentome,please.請聽我說。Be型祈使句：Be動詞+其他.Bequiet,please.請安靜。Let型祈使句：Let+sb.+動詞原形+其他.

Let’splaybasketball!我們去打籃球吧！No型祈使句：No+v.-ing/名詞（表示禁止）!

Nosmoking!禁止吸煙！意為“必須；一定”，表示說話人的主觀看法和主觀上的必要性，也用于表達命令或愿望，只能用于現在時，無人稱和數的變化。意為“不得不；必須”，側重指客觀上的需要。musthavetomust和havetoDoyouknowthemeaningofthesesigns?Don’trun.Don’t

walk.Walk.Run.LibraryRulesDon’ttalk.______________________________________________________Don’tlistentomusic.Don’teatordrink.Don’ttakephotos.Writetherulesfortheschoollibrary.3a1.Bequiet?(she/haveto/inthelibrary)Q:Doesshehavetobequietinthelibrary?

A:Yes,shedoes.

2.Eat?(he/haveto/inthedininghall)Q:_______________________________________A:_______________________________________Doeshehavetoeatinthedininghall?Yes,hedoes.Usethewordstomakequestionsabouttherules.Thenwriteanswersaccordingtoyourschool.3b3.Listentomusic?(we/can/inthehallways)Q:_______________________________________A:_______________________________________4.Wearahat?(we/can/intheclassroom)Q:_______________________________________A:_______________________________________Canwelistentomusicinthehallways?No,wecan’t.Canwewearahatintheclassroom?No,wecan’t.1.Wecaneatinclass.2.Wedon’thavetocometoschooleveryday.3.…Makeupfivecoolrulesforyourdreamschool.Shareyourruleswiththeclass.YourclassmatesvotefortheCoolestSchool!3cAtmydreamschool,wedon’thavetocometoschooleveryday.Wecaneat