人教版2025七年级下册英语Unit 2 No Rules, No Order 第四节语法 课件.pptx

?Unit2NoRules,NoOrderSectionAGrammarWhatrulesdowefollow?

Readandpayattentiontothesentencepatterns.TomMsBrownTom,doyouknowtheschoolrulesnow?Yes,MsBrown.Iknowmanyrules.Forexample,walkinthehallway.Anyotherrules?Bepoliteandtreatoneanotherwithrespect.Don’trun.Don’tberude.Nosmoking.Let’sfollowtherules.

Walkinthehallway.Bepoliteandtreatoneanotherwithrespect.Don’trun.Don’tberude.Nosmoking.Let’sfollowtherules.Readandfindtherules.Whydoweuseimperatives(祈使句)?Togivecommands(命令）Tomakerequests(请求）Togivewarnings(警告）Togivesuggestions(建议）肯定祈使句否定祈使句Let’snotbreaktherules.Do型祈使句Be型祈使句Let型祈使句其它型祈使句

Do型祈使句起床吃你的早餐把那个给我读这本书不要吃那个蛋糕不要碰它不要着急不要坐这儿

Be型祈使句小心Let型祈使句Don’tbecareless.不要粗心让我们出去吧我们别出去了。

Howcanwemakeimperativesmorepolite?

其它型祈使句Noparking.Nophotos.Noswimming.Nofeeding.Nevergiveup.由never开头构成的否定祈使句。

TomandAnnearetalkingaboutthetrafficrules.Anne,doyouknowsometrafficrules?Yes.Youcanturnrightwhenyouseethesign.Youareright.Driverscan’tparkhere.Youmeandriversmustn’tparkhere.Yes.Wemustlookatbothsidesbeforecrossingtheroad.Iagree.Wealsohavetowearaseatbeltwhiletakingacar.

Doyouknowthedifferencesamongcan/haveto/must?Anne,doyouknowsometrafficrules?Yes.Youcanturnrightwhenyouseethesign.Youareright.Driverscan’tparkhere.Youmeandriversmustn’tparkhere.Yes.Wemustlookatbothsidesbeforecrossingtheroad.Iagree.Wealsohavetowearaseatbeltwhiletakingacar.

canYoucanturnrightwhenyouseethesign.Canwebringourphonestoclass?Youcan’tswimhere.IcantranslatetherulesintoEnglish.表许可，意为“可以”表请求，意为“可以”表许可，意为“可以”（否定）表能力，意为“能；会”

mustVS.havetoDriversmustn’tparkhere.Wemustlookatbothsidesbeforecrossingtheroad.Must强调说话者的主观意愿，“必须”无人称和数的变化，后接动词原形。Wehavetowearaseatbeltwhiletakingacar.Shehastogetupearlytopreparebreakfast.Shedoesn’thavetogetupearlytopreparebr