[英语]Noun Clause 2.pptVIP

Noun Clause名词性从句 2 the second key grammatical points in this semester 名词性从句的具体分类 在句子中起名词作用的句子叫名词性从句 (Noun Clauses）。 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，名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。 （1）That he finished writing the composition in such a short time surprised us all. 　　（2）Whether we will go for an outing tomorrow remains unknown. 　　（3）Who will be our monitor hasnt been decided yet. 　　（4） Whom we must study for is a question of great importance. 　　（5）What caused the accident remains unknown. 　　（6）Whatever you did is right. 　　（7）Whose watch was lost is unknown. 　　（8）What we need is time. （一） 主语从句 1.概念： 在复合句中充当主语的句子叫做主语从句. 要点1. 主语从句的时态不受主句的时态影响和限制。 要点2：连词位于句首不能省略 要点3：主语从句大多数情况下视为三单  要点4：为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正主语搁置于句末 (1)It is ＋名词＋从句  　　1.It is a fact that he is a good student.  　　2.It is an honor that I can address the meeting.  　　3.It is common knowledge that the sun moves around the earth. 　　 (2)it is ＋形容词＋从句 1. It is certain that he will win the match. 　　2. It is true that he has made a very important discovery in chemistry. 　　3. It is very likely that they will hold a meeting. 　　4. It is strange that he should do that. 　　 (3) it ＋不及物动词＋从句 It seems that he has no problems.  It happened that he bought the TV. (4) it is＋过去粉刺＋从句 此结构中的主语从句不可提前 　　It is reported that… 　　It has been proved that…  要点5：What 与that 在引导主语从句时的区别  　　What 由于缩合词的作用，它在引导主语从句时在从句中充当句子成分，如主语．宾语．表语，而that 则不然。　　What you said yesterday is right. =The things that you said yesterday is right. What he did is wrong. （二）宾语从句 概念：宾语从句就是一个句子作动词或介词的宾语。 学习宾语从句要抓住三要素：时态，语序，连接词。 要点1：连接词的使用 1．从句为陈述句，常选择连接词that或将that省略。   2．从句为特殊疑问句，常选择 what,when,where,which,who,how等的疑问代、副词作连接词。 3. whether 与 if 的使用请参与第一部分所学内容。  要点2：时态 1.主句用一般现在事态，从句可用任意时态。 2.主句用过去时，从句用过去某个时态。 3.主句用过去时，从句是客观真理时，只用一般现在时。 要点3：宾语从句必须用陈述语序。 False: He is wondering when can he finish this difficult job.Right: He is wonderi