七年级英语上册 Unit 4 Hobbies Language课件 牛津广州版.ppt

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1、Unit4HobbiesLanguage“When”doyouusuallycometoschool?Whatisthemeaningof“when”inthesentenceabove?Doyouknowwhatelsemeaningof“when”?Readthesetwosentences:1.WhenIwasabouteight,Igotabookaboutstars.2.Whenwearrived,theskywentdark.Conclusion:“when”hastwomeanings,1.什么时候,2.当…时…WhenIwasabouteight,Igotabookabo

2、utstars.Whenyouknowthese,starttolookathestarsinsideeachgroup.Whenwewanttobeinthepicture,weneedtoasksomeonetotakethephotographforus.AdverbialclausesoftimeWecanusetheconjuction“when”“toformanadverbialclauseoftime.Itlinkstwoclausesinonesentenceandsuggeststwoactionshappeningatthesametime.Matchthephra

3、seswithwhen.2.fHesitsonthefloorwhenhewatchesTV./WhenhewatchesTV,hesitsonthefloor.3.bHestaysinbedwhenheisill./Whenheisill,hestaysinbed.4.cIphonemyfriendswhenIhavedifficulthomework./WhenIhavedifficulthomework,Iphonemyfriends.5.dShecarriesabascketwhenshegoestotheshops./Whenshegoestotheshops,shecarri

4、esabasket.6.aHetravelsbybuswhenhegoestoschool./Whenhegoestoschool,hetravelsbybus.Using“usedto/didnotuseto”Iusedtogooutsideeveynighttolookatthestars.WhenIwasyoung,Ididnotusetohaveanymoney.WheredidGrandfatherusetolive?Weuse“usedto”tosaysomethinghappeningregularlyorfrequentlyinthepast,butnotanylonge

5、ratthepresenttime.Itsnegativeformis“didnotuseto”.Rememberwealwaysuseitinthepasttense.usedtodosth.意思是“过去常常做某事”，表示过去经常做或一直做而现在不做，它只用于过去时态。(一)肯定句式：主语＋usedto＋动词原形……例如：Iusedtogotothecinema,butIneverhavetimenow.我过去经常去看电影，但现在没有时间了。Heusedtolistentopopmusicbutnowhelikesrockmusic.他过去总听流行音乐，但现在喜欢摇滚了。(二)否定句式

6、：A)主语＋didnotuseto＋动词原形……B)主语＋usednotto＋动词原形……第一种否定句型，就是把used当做实义动词来看，所以变否定句要用助动词did；第二种否定句是把used当做情态动词，变否定句直接在used后面加not即可，usednot可以缩写成usedn't或usen't。美式英语通常用A种形式，英式英语常用B种形式。例如：Youdidn'tusetodrink.你过去不喝酒。Theshopusedn'ttoopenonSundays.过去这家商店星期天不营业。(三)一般疑问句式：A)Did＋主语＋useto＋动词原形……？B)Used＋主语＋to＋动词原形……

7、？美式英语通常用A种形式，英式英语用B种形式。例如：Didyouusetogoswimmingintheriverwhenyouwereyoung?你小时候经常在河里游泳吗？Usedhegotoschoolbybike?他过去骑车上学吗？(四)usedto用于省略句时，肯定式保留to，否定式不保留to。例如：——Usedyouplaybasketball?——你过去常打篮球吗？——Yes,Iusedto.(No,Iusedn't.)