九年级英语全册-Unit 7 Teenagers should be allowed to choose their own clothes（第3课时）（Grammar Focus-4c）同步语法精讲精练课件.pptx

Unit7Teenagersshouldbeallowedtochoosetheirownclothes.,第三课时(GrammarFocus4c)单元同步语法精讲精练,含情态动词的被动语态,肯定句式：主语情态动词be动词的过去分词(by.)eg：Teenagersshouldbeallowedtochoosetheirownclothes.青少年应该被允许选择他们自己的服装。否定句式：主语情态动词notbe动词的过去分词(by.)一般疑问句式：情态动词主语be动词的过去分词(by.)?肯定回答：“Yes，主语情态动词”；否定回答：“No，主语情态动词not”。【注意】含must的一般疑问句作否定回答时应用neednt；而含need的一般疑问句作肯定回答时应用must。,eg：Mustalltheroomsbetidiedup？所有的房间都必须整理好吗？Yes，theymust.是的，必须整理好。No，theyneednt.不，不必都整理好。Needhebeoperatedonatonce？他需要立即手术吗？Yes，hemust.是的，他必须。No，heneednt.不，他不需要。,特殊疑问句式：疑问副词/代词(不作主语)情态动词主语be动词的过去分词(by.)?疑问代词(作主语)情态动词be过去分词(by.)?eg：Whencanmycomputerberepaired？我的电脑什么时候能修好？【拓展】不能用被动语态的几种动词：不及物动词不能用于被动语态。如：die，happen，takeplace等。感官动词、半连系动词没有被动态。如：feel，become，get，look，seem等。有些动词用主动形式表被动意义。eg：Thispenwriteswell.这支笔很好写。,一、用括号内所给动词的适当形式填空。1Manymoretreesshould_(plant)thisyear.2Mustthework_(finish)by6：30thisafternoon?3Howcanthelostboy_(find)?4Thestarscan_(notsee)inthedaytime.5Canthiskindofbike_(buy)inthatshop?,beplanted,befinished,befound,notbeseen,bebought,二、按要求完成句子，每空一词。6Nobodycananswerthequestion.(改为同义句)Thequestion_byanybody.7Weshouldbrushourteethtwiceaday.(改为被动语态)Ourteethshould_twiceaday.8Canyoutakecareofthechildren？(改为被动语态)_thechildren_careof?9Theclassroommustbecleanedafter_school(对画线部分提问)_theclassroom_?10Wemustwashourhandsbeforemeals.(改为被动语态)Ourhands_beforemeals.,cantbeanswered,bebrushed,Can,betaken,Whenmust,becleaned,mustbewashed,本课时其他知识点精讲精练,chance可数名词，意为“机会；可能性”。achanceofdoingsth./achancetodosth.做某事的机会educate动词，意为“教育；教导”。【拓展】education名词，意为“教育”。keep.awayfrom避免接近，远离makeonesowndecision自己做决定,1Mr.Jonesgotgreatsupportfromhis_(社区)2Ihopetohavea_(机会)toexplainittoyou.3Iwillnotbeableto_(应付)thesituationwithoutyourhelp.4Theoldinour_(社会)needcareandprotection.5Parentsshould_(教育)theirchildrentobehavewell.6你应当学着自己做决定。Youshouldlearnto_7请远离那台机器！Pl