2025年春新人教版英語(yǔ)七年級(jí)下冊(cè)課件 Unit 2 單元語(yǔ)法沙龍

單元語(yǔ)法沙龍Unit2NoRules,NoOrder分別找出下列句子中的祈使句和情態(tài)動(dòng)詞1.Don’tlistentomusicinclass.2.Nosmoking!3.MarymustreadabookbeforeshewatchesTV.4.Wealwayshavetoweartheschooluniform.5.Youmustn’tbelateforschool.6.Becarefulnexttime.7.Let’shavearest.8.Youcanplaybasketballattheweekend.9.Canweeatintheclassroom?10.Wehavetobequietinthelibrary.祈使句：______________________________________情態(tài)動(dòng)詞：____________________________________1267must;haveto;mustn’t;can;Can;haveto一祈使句祈使句用于表達(dá)命令、請(qǐng)求、勸告、警告、禁止等的句子稱(chēng)為祈使句。祈使句的構(gòu)成：Do型、Be型、Let型等祈使句的應(yīng)答考點(diǎn)1祈使句的肯定、否定形式及注意事項(xiàng)祈使句中，通常省略主語(yǔ)you，其肯定形式是以動(dòng)詞原形開(kāi)頭，否定形式是在動(dòng)詞原形前加don’t。祈使句句末使用句號(hào)或嘆號(hào)，讀時(shí)用降調(diào)。為表示語(yǔ)氣委婉，可在句首或句末加please,please放在句末時(shí)，前面通常加逗號(hào)?！oandwashyourhands.去洗你的手?！ekindtoyoursister.對(duì)你妹妹要和善?！eepoffthegrass,please.請(qǐng)勿踐踏草坪?！on’tbelateforclass.上課不要遲到?！equiet,please.請(qǐng)安靜?？键c(diǎn)2祈使句的構(gòu)成1.Do型祈使句肯定結(jié)構(gòu)：動(dòng)詞原形(+賓語(yǔ))(+其他).否定結(jié)構(gòu)：Don’t+動(dòng)詞原形(+賓語(yǔ))(+其他).·Respecteachother’sopinionsduringdiscussions.討論時(shí)要尊重彼此的意見(jiàn)?！on’tforgettobringyourhomeworktomorrow.明天別忘了帶作業(yè)來(lái)。2.Be型祈使句肯定結(jié)構(gòu)：Be+表語(yǔ)(名詞或形容詞)(+其他).否定結(jié)構(gòu)：Don’t+be+表語(yǔ)(名詞或形容詞)(+其他).·Bepolitetoeveryoneyoumeet.對(duì)你遇到的每個(gè)人都要有禮貌?！on’tbeafraidtoaskquestions.不要害怕提問(wèn)題。3.Let型祈使句肯定結(jié)構(gòu)：Let+賓語(yǔ)+動(dòng)詞原形(+其他).否定結(jié)構(gòu)：Don’t+let+賓語(yǔ)+動(dòng)詞原形(+其他).或Let+賓語(yǔ)+not+動(dòng)詞原形(+其他).·Let’sgoforawalkafterdinner.讓我們晚飯后去散步吧?！on’tletthemmakenoise.=Letthemnotmakenoise.不要讓他們制造噪音。4.其他類(lèi)型的否定祈使句(1)No+v.-ing!/No+名詞！·Nofishing!禁止釣魚(yú)！·Nophotos!禁止拍照！(2)never代替don’t來(lái)加強(qiáng)語(yǔ)氣?！evergiveup!絕不放棄！記憶口訣:祈使句用法口訣:祈使句，有威力，請(qǐng)求、命令或建議。主語(yǔ)you常省去，動(dòng)詞原形開(kāi)頭記。否定式要注意，句首要把Don’t立。語(yǔ)氣委婉please，句首、句末沒(méi)關(guān)系。Nodoing!需謹(jǐn)記，表示“禁止”不小覷?？键c(diǎn)3祈使句的應(yīng)答回答祈使句的肯定形式一般用will，回答祈使句的否定形式一般用won’t。·—Pleaseclosethedoor.請(qǐng)關(guān)門(mén)?！猄ure,I’llcloseit.當(dāng)然，我會(huì)關(guān)上的。·—Don’ttouchthathotpan!不要碰那個(gè)熱鍋！—Sorry,Iwon’t.對(duì)不起，我不會(huì)的。二情態(tài)動(dòng)詞can、haveto、must情態(tài)動(dòng)詞can表示請(qǐng)求或許可，意為“可以”表示能力，意為“能；會(huì)”haveto與must兩者都表示“必須”，其后均接動(dòng)詞原形兩者有時(shí)可以互換，但它們用法上也有區(qū)別考點(diǎn)1can表示請(qǐng)求或許可，意為“可以”?！ぁ狢anyoucometomybirthdayparty?你能來(lái)我的生日聚會(huì)嗎？—Yes,Ican.是的，我能。·—Canweeatintheclassroom?我們能在教室里吃東西嗎？—No,youcan’t.Butyoucaneatinthedininghall.不，你們不能。但你們能在餐廳里吃東西。考點(diǎn)2can還可以表示能力，意為“能；會(huì)”。“can+動(dòng)詞原形”表示“(某人)能/會(huì)做某事”，其否定形式為“can’t/cannot+動(dòng)詞原形”，表示“某人不會(huì)做某事”?！canplaybasketball.我會(huì)打籃球?！omcan’tswim.湯姆不會(huì)游泳?？键c(diǎn)3haveto與must的用法及不同點(diǎn)·It’sraining,andyouhavetotakeanumbrella.正在下雨，你必須帶把傘。(受客觀因素影響)·YoumustreadabookbeforeyouwatchTV.在看電視前你必須讀書(shū)。(主觀需要)·Dotheyhavetodothework?他們必須做這項(xiàng)工作嗎？·Hedoesn’thavetogohomenow.他不必現(xiàn)在就回家?！oumustn’tbelateforschool.你不要上學(xué)遲到。·—MustIcleanalltherooms?我必須打掃所有的房間嗎？—No,youneedn’t/don’thaveto.不，你不必。一單項(xiàng)選擇1.______swimonyourwayhome.It’sreallydangerous.A.Shouldn’t B.Don’t C.Doesn’t D.Didn’t2.______tryinganddoyourbest.A.Keep B.Keeping C.Tokeep D.Kept3.[北京]—Bill,______Iuseyourruler?—Ofcourseyoucan.Hereyouare.A.can B.must C.need D.shouldBAA4.—Hi,Bill!Whatisanimportantruleinthelibrary?—We______bequiet.A.haveto B.can C.may D.mustn’t5.—People______wearhelmets(頭盔)whentheyridee-bikesaccordingtothetrafficrules.—Yes.Ortheywillbepunished.A.must B.can C.may D.mightAA二按要求完成句子，每空一詞6.Youmustbequiet!(改為祈使句)______________,please!7.Youshouldn’ttakephotosinthemuseum.(改為祈使句)________________photosinthemuseum.BequietDon’ttake8.Takesomecashwithyouwhenyoutraveltoothercountries.(改為否定句)________take______cashwithyouwhenyoutraveltoothercountries.9.Maryhastohandinthereportbeforethisweekend.(改為一般疑問(wèn)句)_______Mary_______tohandinthereportbeforethisweekend?10.MustIdothedishesnow?(作否定回答)______,you________.Don’tanyDoeshaveNoneedn’t三用can,haveto/must,can’t/mustn’t填空Inourclass,wehavesomerulestohelpuslearnbettertogether.11.We___________belateforclass.It’simportanttobeontime.12.We____________talkduringclassunlesstheteacherasksusaquestion.13.We______bekindtoeachother.Don’tbully(恐嚇)others.14.We_______________doourhomeworkandbringittoschooleveryday.can’t/mustn’tcan’t/mustn’tmusthaveto/must15.We____________________clean