高一英语Unit4 astronomy grammar课件 新课标 人教版 课件.ppt

Grammar“Howdoyoudo?”isagreeting.
Whatshesaidisnotyetknown.
Thatweshallbelateiscertain.
Itiscertainthatweshallbelate.
Makesentences主语从句（NounClausesastheSubject）主语从句：

做主语用的名词性从句，因其在复合句中做主语，又称主语从句，引导主语从句的有连词that，whether，连接代词who，what，which，连接副词when，where，how，why等。
1.连接词：2)连接代词who，what，which,whatever,whichever,whoever3)连接副词when，where，how，why等。Itisstilluncertainwhetherheiscomingornot.
ItisanhonourthatIwasinvitedtoattendthemeeting.
2）It+不及物动词+主语从句
Itseemed(happened,doesn’tmatter,hasturnedout)that…3)It+及物动词（被动语态）+主语从句误：Theyshouldlikeeachotherisnatural.
正：Thattheyshouldlikeeachotheris
natural.
正：Itisnaturalthattheyshouldlike
eachother.4).用于Itisimportant/natural/necessary/impossiblethat...句型中,主语从句应使用虚拟语气,谓语动词用\“should+动词原形\”的形式,should有时可以省略。
5)在It+be+suggested/advised/ordered/requested/
insisted/required中,that从句的谓语也应该用\“should+动词原形\”的形式,should有时可以省略。5.主语从句需注意的问题

(1)主语从句中用陈述语序
WhatsheisafraidofistheirtakinghertoParis.(Whatissheafraidof…Wrong)
(2)主语从句后谓语动词用第三人称单数
Thattheyhaven’tphonedisstrange.6.It作形式主语和it引导强调句的比较7.what与that在引导主语从句时的区别
what引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that则不然。例如：
1)Whatyousaidyesterdayisright.

2)Thatsheisstillaliveisaconsolation.1.Whereshallwespendtheholidayisn’tdecided.Describeyourmotherwithyourpartner.1.Ireadaboutitinsomebookorother,doesitmatter_______itwas?（01北京春季)A．whereB．whatC．howD．which1._____youdon’tlikehimisnoneofmybusiness.
2._____hesaidatthemeetingastonishedeverybodypresent
3.________the2000OlympicGameswillbeheldinBeijingisnotknownyet.
4.________we’llgocampingtomorrowdependsontheweather.
5.________leavestheroomlastoughttoturnoffthelights.1.Ihavealwaysbeenhonestandstraightforward,anditdoesn‘tmatter______thatI’mtalkingto.A.whoisitB.whoitis
C.itiswhoD.itiswhom3._____madetheschoolproudwas______morethan90％ofthestudentshadbeenadmittedtokeyuniversities.
A.What;becauseB.What;that
C.That;whatD.That;because
4.______wewillgocampingtomorrowdependsontheweather.
A.IfB.Whether
C.ThatD.Where
5._______thattheycanpassthewrittenexamthistime.
A.ThatishopedB.Itishop