英语语法讲座名词性从句PPT课件

1、名词性从句名词性从句英语名词性从句由连词、连接代词和连接副词引导，按其作用与功能，分为主语从句、宾语从句、表语从句和同位语从句。第1页/共14页名词性从句名词性从句名词性从句的关联词类别类别关联词关联词备注备注连接词连接词that宾语从句中可以省略，其宾语从句中可以省略，其他从句中不可省略他从句中不可省略if，whether宾语从句中多可通用，其宾语从句中多可通用，其他从句中用他从句中用whether第2页/共14页名词性从句名词性从句类别类别关联词关联词备注备注连连接接代词代词who，whom，whose，what，which，whoever，whatever连接连接副词副词when，whe

2、re，how，why等。等。第3页/共14页名词性从句名词性从句 1.主语从句 (1)主语从句在句子中作主语。它可以放在主句谓语动词之前。 What he said sounded reasonable.他所说的听起来是合理的。 (2)但多数情况由it作形式主语，而把主语从句放在主句之后。 It is very important that we should master at least two foreign languages.我们起码应该掌握两种外语， 这一点很重要。第4页/共14页名词性从句名词性从句 2.宾语从句 宾语从句在句中作及物动词或介词的宾语。 We all know (

3、that)the Earth is round. Yao Ming will talk to us about what he saw in the USA.第5页/共14页名词性从句名词性从句【注意】某些形容词或过去分词后常接宾语从句。这些形容词和过去分词常见的有：afraid，certain，glad，happy，surprised等。I am not sure whether I can afford to buy the furniture.第6页/共14页名词性从句名词性从句 宾语从句的否定转移：某些动词如think，believe，expect等，如果宾语从句的意思是否定句，常把否

4、定转移到主句的谓语上。如“我认为他不会遵守诺言。”一句，在英语中应说：I dont think he will keep his promise.第7页/共14页名词性从句名词性从句 3表语从句 表语从句位于主句中的系动词之后。 That is why he was absent from school yesterday. That is where he once lived.第8页/共14页名词性从句名词性从句 【注意】连词because，as if也可以引导表语从句。 It looks as if it was going to snow. It is because he was i

5、ll.第9页/共14页名词性从句名词性从句4同位语从句同位语从句跟在名词之后，进一步说明该名词的具体内容。常见的这类名词有：fact，hope，idea，order，problem，belief，doubt，truth，suggestion，thought，question等。We all know the fact that he always tells lies.第10页/共14页名词性从句名词性从句 I am glad and excited at the good news that Ive got the first prize for the competition. 听到我竞赛获得一等奖的消息，我既高兴又激动。第11页/共14页名词性从句名词性从句【注意】引导同位语从句一般不使用连接代词。如果主句的谓语太短，为了使句子平衡，常把同位语从句置于主句谓语之后。The news came that the enem