选修8unit1名词性从句
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【高二学习指导】人教新课标选修八unit1单元语法讲解:名词性从句名词性从句在句子中充当名词的句子称为名词性从句。
名词性从句的功能相当于名词短语。
它可以在复句中充当主语、宾语、谓语、同位语、介词宾语等。
因此,根据名词性从句在句子中的不同语法功能,它可以分为主语从句、宾语从句、谓语从句和同位语从句。
主语从句的用法主语从句是复合句中的主语。
它可以放在句子的开头,但公共主语从句主要放在句子的结尾,正式主语则用在句子的开头。
1.thattheearthisroundistrue.=它发出声音。
注意:连词that,whether在从句中不担任句子成分,只起连接作用,不能省略(注:if不可用来引导主语从句)以信息技术为正式主题的结构(1)itis+名词+从句Tisafacthat。
事实是itisanhonorthat…非常荣幸(2) it+形容词+从句(多用should)itisnaturalthat…很自然…奇怪的是(3)itis+不及物动词+从句看起来。
似乎ithappenedthat…碰巧…这太过分了。
看来(4)itis+过去分词+从句据报道ithasbeenprovedthat…已证实…据说it作形式主语和it引导强调句的比较它作为正式主语取代主语从句,主要是为了平衡句子结构,主语从句的连接词也发生了变化。
由它引导的强调句强调句子的一部分。
无论强调什么成分,都可以使用连词。
Who/Who也可以使用。
例如:判断:据说你没看过电影。
itdoesn’tinterestmewhetheryousucceedornot.这是在摩登广场。
itisjohnthatbrokethewindow。
考点一主语从句1.引导主语从句的连接词:从属连词that,whether/if连接代词what,who,whom,whose,whatever,whichever,whoever等;连接副词when,where,why,how,whenever等。
①That they were in truth sisters was clear from the facial similarity between them.从她们的面貌相似度就能清楚地看出她们真是亲姐妹。
②What struck me most in the movie was the father's deep love for his son.影片中最打动我的是父亲对他儿子深深的爱。
2.主语从句一般放在句首,但有时也可用it作形式主语,而将主语从句移到句子的末尾。
常见的句型:(1)It+be+形容词(necessary/likely/important/uncertain等)+that从句(2)It+be+名词(短语)(a pity/shame/no wonder/no surprise等)+that从句(3)It+be+过去分词(said/reported/decided/believed等)+that从句(4)It+不及物动词(seem,appear,happen等)+that从句①It is uncertain what side effect the medicine will bring about,although about two thousand patients have taken it.尽管大约两千名患者已经服用了这种药,但是它会带来什么样的副作用还不清楚。
②It's no surprise that our team has won the game.我们队获胜一点都不令人吃惊。
③It is decided that the meeting will be put off till next Monday.会议被推迟到下周一召开已经定下来了。
选修8 Unit 1名词性从句完成句子1. It is still unknown _______________________________ to visit her sick father. 她是否能省出点时间去看望她生病的父亲还不清楚。
(set)2. ________________________ there was a short cut to the history museum.(occur) 我突然想起去历史博物馆有条近路。
3. It is announce that ________________________ in the examination will be graded zero.(catch)已宣布任何被抓到在考试中作弊的学生都得零分。
4. _______________________ is the salary and the chance to travel. (attract)吸引我做这份工作的是其薪水和有去旅游的机会。
5. It matters little how a man dies; _____________________ is how he lives.(matter) 一个人是如何死的这不重要,重要的是他是怎样生活的。
6. __________________doesn’t make much difference if he wants to apply for this job.(abroad)如果他想申请这份工作,他是否出国并没有太大的影响。
7. ______________________in the game worried his coach.(make)那个运动员在比赛中可能会犯错,这让他的教练很着急。
8. It is a new trend __________________________________________ . (purchase) 越来越多的消费者在网上购物是一个新趋势。
人教新课标选修八Unit1语法专题讲解-名词性从句名词性从句在句子中起名词作用的句子叫名词性从句。
名词性从句的功能相当于名词词组,它在复合句中能担任主语、宾语、表语、同位语、介词宾语等, 因此根据它在句中不同的语法功能,名词从句又可分为主语从句、宾语从句、表语从句和同位语从句。
主语从句的用法一. 主语从句在复合句中作主语, 它可以位于句首, 但常见的主语从句多放在句末,句首则用形式主语it。
1.That the earth is round is true.= It is true that the earth is round.2. Whether he will come hasn’t been decided.= It hasn’t been decided whether he will come.注意: 连词that, whether在从句中不担任句子成分,只起连接作用,不能省略(注:if不可用来引导主语从句)二. 用it 作形式主语的结构(1) It is+名词+从句It is a fact that … 事实是…It is an honor t hat …非常荣幸It is common knowledge that…是常识(2) It is+形容词+从句(多用should)It is natural that… 很自然…It is strange that… 奇怪的是…(3) It is +不及物动词+从句It seems that… 似乎…It happened that… 碰巧…It appears that… 似乎…(4) It is +过去分词+从句It is reported that… 据报道…It has been proved that… 已证实…It is said that… 据说…it 作形式主语和it引导强调句的比较it 作形式主语代替主语从句,主要是为了平衡句子结构, 主语从句的连接词有变化。
第一单元语法第一单元—名词性从句1.含义:在句子中起名词作用的从句称为名词性从句2.类型:主语从句,宾语从句,表语从句和同位语从句。
3.连接词:that whether if4.疑问代词:who whom whose which what whoever whomever whicheverwhatever5.疑问副词:when where why how6.主语从句:主语从句可以放在句首,也可以it做形式主语,而从句放在句末What is I want to know is the news注意:a. that 引导主语从句大多数要放在句末。
b. what 引导的主语从句一般不用it 作形式主语It is a new bike what he wants.c.由whether及其他连词引导的主语从句放在句首或句末均可。
d.如果含有主语从句是疑问式,则需用it作形式主语。
Has it announced when the planes are to take off?7.常见的用it作形式主语结构a .It is +名词+that 从句It is a fact /a shame/a pity/ no wander/good news…that…b. It is +形容词+that从句It is important/wonderful/necessary/strange/possible/likely/..that..c. it is +过去分词+that 从句it is said/reported/decided/believed ..that...it is believed that computers have changed our daily life.d. it +不及物动词+that 从句it seems/turned out/does not matter.. that ..it turned out that he lied to us.8.主语从句作主语,谓语一般用单数。
名词性从句的结构功能及分类选修8 unit 1所谓名词性从句,顾名思义,就是从句本身的属性相当于一个名词。
它包含主语从句、表语从句、宾语从句和同位语从句。
二、各类名词性从句用法解析:1.主语从句that(不能省略),whether,who ,whom,whose,what,which,when,where,why,how ,whatever,whoever,whomever,whosever,whichever;2.表语从句that(不能省略),whether,if ,as if,who ,whom,whose,what,which,when,where,why,how ,whatever,whoever,whomever,whosever,whichever,because,as though;【注意】that, why, because引导表语从句时的区别:○1当主语是reason时,只能用that引导;The reason why he came late is that his car broke down on the way.○2当表语从句的内容为原因引起的结果时,只能同why引导;His car broke down on the way. That’s why he came late for school.○3当表语从句的内容为说明引起结果的原因时,用because引导;He didn’t come to work those days. That’s because he was ill.3.宾语从句that(能省略,但如果是两个以上的从句时that不能省略),whether,if ,who ,whom,whose,what,which,when,where,why,how ,whatever,whoever,whomever,whosever,whichever;注意:○1从句中有or not时用whether引导;○2介词的宾语从句只能用whether引导;○3如果宾语从句是否定时,只能用if引导;○4在discuss等某些动词后常用whether引导;○5doubt 后的宾语从句用if /whether引导;don’t doubt 后的宾语从句用that引导;○6― be + adj‖ 后的宾语从句用if /whether引导;4.同位语从句that(能省略),whether,who ,whom,whose,what,which,when,where,why,how ,whatever,whoever,whomever,whosever,whichever;【注意】由于同位语从句是对前面的名词作进一步说明,所以备考时应注意下列名词:fact, news, idea, hope, belief, thought, doubt, truth, order, suggestion, problem, desire,possibility, answer, information, word等。