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时间:2020-05-22
《名词性从句复习与定语从句.ppt》由会员上传分享,免费在线阅读,更多相关内容在PPT专区-天天文库。
1、名词性从句名词性从句复习基本概念:名词在句子中可以作主语,宾语,表语,同位语。我们就把在复合句中作主语,宾语,表语,同位语的句子称为名词性从句。引导名词性从句的连词有:从属连词:that,whether,if疑问代词:what,which,who,whom,whose疑问副词:when,where,why,how复合关系代词:whatever,whoever,whomever,whosever复合关系副词:whenever,wherever主语从句一个句子在复合句中充当主语叫主语从句。Thattheearthisroundist
2、rue.Whethershewillcomeornotisstillaquestion.Whatyouaredoingseemsverydifficult.Whentheywillstarthasnotbeendecidedyet.特别提醒1.引导主语从句的连词是不能省略的。2.可用形式主语it代替主语从句,但what除外;Itisstillaquestionwhethershewillcomeornot.Ithasnotbeendecidedyetwhentheywillstart.常用的It…that…主语从句模式:1)It
3、’s+adj.+that…It’seasythattheboyworksoutthismathsproblem.It’simportantthatweshouldknowtheinformation.2)It+seems/happenedthat…IthappenedthatIwasoutthatevening.X:It’shappenedthat….3)It’s+过去分词+that…It’shopedthatourteamcanwinthegame.It’sthoughtthathousingproblembecomesmor
4、eandmoreserious.(It’ssaidthat…It’sconsideredthat…It’sreportedthat…It’sbelievedthat…)对比强调句:It’s+被强调部分+that/who..被强调部分:人,时间,地点,原因...ItwasinthelibrarythatIlostmyglasses.ItisonSundaythathealwaysgoesfishing.表示“是否”意义时,一般用whether而不用if引导主语从句,但口语时,如果有形式主语it引导,既可用whether,也可用if
5、。Itisstillaquestionifshewillcomeornot4.what作从句中的成分.that不充当任何成分如;Thatthethiefwasarrestedistrue.Whatsurprisedmemostistheseriouspollutionoftheriver.试试看:1___hewillgoabroadistrue.2______wearegoingtoplanttreestomorrowhasbeendecided.3_____upsetherishisunkindwords.4_____weex
6、pectisanactiveyoungman.ThatThatWhatWhatthat与whether区别that用于肯定句,肯定的语气whether用于疑问或否定的语气.1____wecanwinthematchisclear.2____wecanwinthematchisstillaproblem.3____hewillgotoLondonhasbeendecided4_______hewillgotoLondonhasnotbeendecidedThatWhetherThatWhether宾语从句一个句子在复合句中充当宾语
7、就叫宾语从句。I’mglad(that)youhavepassedtheexam.Idon’tknowwhether(if)youarewillingtohelpme.I’msorryforwhatIhavesaid.特别提示1.宾语从句的连词that可以省略。但用and并列两个宾语从句时,第二个从句前的that不可以省略.2.用whetherornot不用if:在介词后的宾语从句通常 用whether引导Idon’tknowwhetherornothewillcome.Itdependsonwhetherheiscomingo
8、rnot.c.真理性的事实,大自然一成不变的东西,时态永远用 现在时.Hesaid(that)hewouldgotoBeijingforameetingandthathecouldgotoseehisuncleassoonashearrivedthere.He
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