No Rules,No Order (Period 3)七年级下册英语课件

NoRules,NoOrder(Period3)SectionA(GrammarFocus-3d)

A:Wecan’tbelateforschool.B:Yes,anddon’teatintheclassroom.A:…PairworkWhatrulesdowefollowatschoolandinclass?queuejumpthequeuefeedleaveabsentn.

队插队v.喂养；饲养v.离开；留下adj.缺席的；不在的absentfromshh(=sh)quietlybeltnoise缺席；不在interj.嘘（用以让别人安静下来）adv.轻声地；安静地n.安全带；腰带；皮带n.声音；噪声Walkinthehallway.Don’trun!Bepoliteandtreatoneanotherwithrespect.Don’tlitter./Youmustn’tlitter./Youcan’tlitter.Canwebringourphonestoclass?No,wecan’t.Wemustkeeptheminourlockers.Canweeatsnacksinclass?No,wecan’teatinclass.Wehavetoeatinthedininghall.3aReadthesentences.Dotheverbsinboldneedtochangeforms?Why?Walkinthehallway.Don’trun!Bepoliteandtreatoneanotherwithrespect.GrammarFocusLookatthesentences:一、祈使句GrammarFocus用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句。祈使句最常用于表达命令，因其主语是第二人称you，且往往被省略，因此祈使句一般以动词原形开头。Goandwashyourhands.去洗洗你的手。（命令）Bequiet,please.请安静。（请求）Practisetheguitareveryday.每天练习吉他。（建议）一、祈使句GrammarFocus

为了表达委婉的语气，可在句首或句尾加上please。please在句尾时要用逗号与句子其他部分隔开。妙指津Don’ttalkinthelibrary,please.请不要在图书馆说话。一、祈使句GrammarFocus祈使句的基本结构类型句式结构示例Do型肯定：动词原形（+其他成分）.Standup.起立。否定：Don’t+动词原形（+其他成分）.Don’tplaywithfire.不要玩火。Be型肯定：Be+表语（+其他成分）.Becalm.冷静。否定：Don’t+be+表语（+其他成分）.Don’tbestupid.别犯傻。Let型肯定：Let+宾语+动词原形（+其他成分）.Let’sgoswimming.咱们去游泳吧。否定：①Don’tlet+宾语+动词原形（+其他成分）.②Let+宾语+not+动词原形（+其他成分）.Don’tlethimgo.=Lethimnotgo.别让他走。一、祈使句GrammarFocus表示禁止，常用于标语、警示语的否定祈使句结构为：“No+动词-ing形式.”或“No+可数名词复数形式/不可数名词.”。妙指津

Nosmoking.禁止吸烟。

Nophotos.禁止拍照。________onthegrass,oritwill“cry”.A．Towalk

B．Nottowalk

C．Walk

D．Don’twalkD

典例可用语法判断法解答本题。句意：不要在草地上行走，否则它会“哭”。本句是否定祈使句，否定祈使句在动词原形前加don’t。点拨一、祈使句Canwebringourphonestoclass?No,wecan’t.Wemustkeeptheminourlockers.Canweeatsnacksinclass?No,wecan’teatinclass.Wehavetoeatinthedininghall.GrammarFocusLookatthesentences:GrammarFocus二、情态动词can

情态动词can，表示“能、会、可以”，可以用来征求意见。没有人称和数的变化，必须与动词原形一起构成谓语。变否定句时，can后加not；变疑问句时，要把can提前。Wecan’t

sleepinclass.—Canweplayfootballinthestreet?—No,wecan’t.—Excuseme,_______Iborrowthisbook?—Sure,butyoumustreturnitbytheendofthisterm.A．can

B．can’t

C．must

D．mustn’t可用语法判断法解答本题。句意：——打扰一下，我可以借这本书吗？——当然可以，但你必须在这个学期末还回来”。can“能，会”；can’t“不能”；must“必须”；mustn’t“禁止”。A

典例点拨二、情态动词canGrammarFocusDon’tlitter./Youmustn’tlitter./Youcan’tlitter.Canwebringourphonestoclass?No,wecan’t.Wemustkeeptheminourlockers.Canweeatsnacksinclass?No,wecan’teatinclass.Wehavetoeatinthedininghall.GrammarFocusLookatthesentences:三、haveto与mustGrammarFocus词汇含义否定形式及含义用法示例haveto必须，不得不don’thaveto不必强调客观需要，带有不情愿的色彩。有人称、数和时态的变化，后面加动词原形Ihavetostayathometolookaftermysister.Hedoesn’t

have

todothehomeworknow.must必须mustn’t禁止强调主观看法，没有人称、数和时态的变化Youmustfinishyourhomeworktoday.Hemustgohomenow.三、haveto与mustGrammarFocus含有haveto或hasto的句子需要分别借助动词do或does构成疑问句或否定句。—DoIhave

togotherenow?

—Yes,youdo./No,youdon’thaveto.must引导的一般疑问句，将must直接提前至句首，其肯定回答为“Yes,...must.”；否定回答为“No,...needn’t./No,...don’t/doesn’thaveto.”，表示“不必”。—MustIdomyhomeworknow?—Yes,youmust./No,youneedn’t/don’thaveto.—Mustwewearschooluniformeverywhere?—No,we________.A．don’t

have

to

B．mustn’t

C．can’t可用语法判断法解答本题。句意：——在任何场合，我们必须都要穿校服吗？——不，我们不需要。don’thaveto“不需要”；mustn’t“禁止”；can’t“不能，不可能”。含有must的一般疑问句，其否定回答用“No,...needn’t./No,...don’t/doesn’thaveto.”。A

典例点拨三、haveto与mustCompletethesentencesusingcan,haveto/must,orcan’t/mustn’t.3b1.Don’tjumpthequeue.You_____________waityourturn.2.I_____feedmydogmanykindsoffood,butI______givehimchocolate.Itisbadforhim!3.A:CanIleavetheclassroomifIdon’tfeelwell?B:Yes,butyou________tellyourteacheraboutitwhenyou________beabsentfromclass.haveto/mustcanmusthavetocan’tCompletethesentencesusingcan,haveto/must,orcan’t/mustn’t.3b4.

A:Hey!CanIlookatyourbook?B:Shh,we_____________talkquietlyinthelibrary.5.A:Canyouputonyourseatbelt?We_____________wearonewhenwe’reinacar.B:Sure.Thanks!haveto/musthaveto/must3cLookatthefirstsignandreadtherules.Thenwritetherulesfortheothersigns.·Donoteatordrink.·Noeatingordrinking.·Youcan’t/mustn’teatordrink.Workinpairs.Chooseasignfrom3c.Guesswhereyoucanseethesignandthenmakeaconversationwithyourpartner.A:Thepictureissobeautiful!Iwanttotakeaphotoforit.B:No,youcan’t.Lookatthesign!A:Whatdoesitmean?B:Itmeans“Nophotos!”.A:Oh,Iknow.Example:Inamuseum…Ingroups,brainstormthreerulesforoneoftheplacesbelow.Thendrawsignstoshowtherules.Shareyoursignsinclassandexplainwhatth