1 名词性从句精讲 在句子中起名词作用的句子叫名词从句(Noun Clauses)。名词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、同位语等,因此根据它在句中不同的语法功能,名词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。That he w ill come here surprises me. I know that he w ill come here. The new s is that he w ill come here. The new that he w ill come here surprises me. 一、名词性从句的相同点:1.结构 2.连接词 引导名词性从句的连接词可分为三类: 从属连接:that, whether, if(不充当从句的任何成分) 连接代词:what, whatever, who, whoever, whom, whose, which. 连接副词:when, where, how, why 二、四大名词性从句的剖析 1 .主语从句 作句子主语的从句叫主语从句。主语从句通常由从属连词that,whether,if 和连接代词what,who,which,whatever,whoever 以及连接副词how,when,where,why等词引导。that在句中无词义,只起连接作用;连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用,在从句中充当从句的成分。例如: That he suddenly fell ill last week made us surprised. 上星期他突然生病了让我们很惊讶。 Whether he will be able to come remains a question. 他是否能够来仍然是一个问题。 What he wants to tell us is not clear. 他要跟我们说什么,还不清楚。 Where the English evening will be held has not yet been announced.英语晚会将在哪里举行,还没有宣布。 有时为避免句子头重脚轻,常用形式主语it 代替主语从句作形式主语放于句首,而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下: (1)It + be +形容词 +主语从句 It is very interesting that he likes such kind of books. (2)It + be +名词 +主语从句 It is a pity that he missed the lecture. (3)It + be +动词的过去分词 + that 从句 It is said that they have won the game. (4)It +不及物动词 + that 从句 It seems that something is wrong with the computer. 另注意在主语从句中用来表示必须、理应如此、建议、要求等语气时,谓语动词要用虚拟语气“(should) +do...