河南省2024八年级英语下册Unit4Whydon'tyoutalktoyourparentsPeriod3SectionA(GrammarFocus-4c)课件新版人教新目标版

Unit4Whydon’tyoutalktoyourparents?Period3SectionA(GrammarFocus-4c)Whydon'tyou...?和Whynot...?Whydon’tyou..?意为“你为什么不.....呢?”，通常用来提出建议，相当于Whynot...?。Whydon’tyou和Whynot后都跟动词原形。对其作肯定回答时，常用Goodidea./Soundsgreat.等;

对其作否定回答时，可根据实际情况作答。例句:l.

—你为什么不买这辆自行车呢?—_____________buythisbike?/___________buythisbike?—哦，它太贵了。—Well.itistooexpensive.Whydon’tyouWhynotWhydon'tyou...?和Whynot...?[拓展]“Whynot?”还可以单独使用，意为“好啊!”“可以呀!”，通常用在口语中，表示赞同。例句:2.—咱们去爬山吧。—Let'sgomountainclimbing.—好啊!天气这么好。—_________?Theweatherissonice.Whynot连词until意为“到.....时，直到....为止”,具体用法如下:用于肯定句,引导时间状语从句,主句谓语动词用延续性动词。例句:3.我将待在这里直到你回来。I

will

stayhere________youcomeback.用于否定句，构成“not...until…”结构,意为“直到......才......”,引导时间状语从句,主句谓语动词一般用短暂性动词。例句:4.昨天晚上John直到他妈妈下班回来才睡觉。Yesterdayevening.John_______sleep_______hismomcamebackfromwork.untildidn’tuntil连词sothat可引导结果状语从句,意思是“因此，所以”;sothat也可引导目的状语从句,意为“为了,目的是”,从句中常含有情态动词can,could,may,might,should等。例句:5.他起得很早，因此赶上了首班公共汽车。Hegotupveryearly_______

hecaughtthefirstbus.例句:6.李老师大声讲课以便每个学生都能听清。Mr.Lispeaksloudly_________everystudentcanhearclearly.sothatsothat连词although意为“虽然，尽管”，相当于though，引导让步状语从句。although用作连词时不能和but连用，但可跟yet,still等连用。例句:7.他虽然独自生活，但他很愉快。_____________helivesalone.yetheishappy.=Helivesalone,________heishappy.Althoughbut一、用until,sothat或although填空(注意大小写)1.[2023滨州改编]—IthinkIamtheshyestinmyclass.WhatshouldIdo?—Bemoreactiveinclass__________youcanimproveyourabilitytoexpressyourself.sothat2.[2023武威改编]Let’swait________therainstops.3.[2023新疆改编]__________thetimeskeepchanging,youngpeopleinChinahaveshownthesamepromise.untilAlthough二、根据汉语意思完成句子,每空一词4.你必须在一周内把这些书还给图书馆。Youmust________thesebooks________thelibraryinaweek.returnto5.学生抄袭别人的作业是不对的。________notrightforstudents________________others’homework.It’stocopy6.我太累了以至于再也走不动