内容正文:
专项四 复合句
重难点21 宾语从句
1.宾语从句的种类
宾语从句是一种名词性从句,在句中作及物动词的宾语,或介词的宾语,或形容词的宾语。根据引导宾语从句的不同连词,宾语从句可分为三类。
1.1. 由that引导的宾语从句。that只有语法作用,没有实在的意义,在口语和非正式文体中可以省略。
He said (that) he wanted to stay at home.
1.2. 由连接代词who, whom, whose, what, which和连接副词when, where, why, how引导的宾语从句。这些连接代词和连接副词在宾语从句中充当某个成分。
Do you know who (whom) they are waiting for?
I don’t know why the train is late.
1.3. 由if或whether引导的宾语从句。if和whether在句中的意思是"是否"。
I want to know if (whether) he lives there.
2.宾语从句的语序
宾语从句的语序应为陈述句的语序,即按照主语、谓语的顺序。
2.1. 陈述句变为宾语从句,语序不变,即仍用陈述语序。
He is an honest boy. The teacher said. → The teacher said(that) he was an honest boy.
2.2. 一般疑问句和特殊疑问句变为宾语从句,语序变为陈述语序。
Does he work hard? I wonder. → I wonder if/whether he works hard.
3. 宾语从句主句与从句时态一致的问题。
3.1. 如果主句是现在的某种时态(包括一般现在时、现在进行时、现在完成时),那么宾语从句的时态可根据实际情况而定。
I remember he gave me a book yesterday.
He has told me that he’ll leave for New York tomorrow.
I don’t think (that) you are right.
3.2. 如果主句是过去的某种时态(包括一般过去时、过去进行时),那么宾语从句一定要用过去的某种时态(包括一般过去时、过去进行时、过去将来时、过去完成时)。
He told me that he would take part in the high jump.
He asked what time it was.
He told me that he was preparing for the sports meet.
3.3. 如果宾语从句表示的是客观事实或真理,即使主句是过去时,从句也用一般现在时态。
Our teacher said that January is the first month of the year.
方法技巧
宾语从句须注意,几点事项应牢记。
一是关键引导词,不同句子词相异。
陈述句子用that;一般疑问是否(if,whether)替;
特殊问句更好办,引导还用疑问词。
二是时态常变化,主句不同从句异。
主句若为现在时,从句时态应看意;
主句若为过去时,从句时态向前移。
三是语序要记清,从句永保陈述序。
4.宾语从句种类具体分述
4.1.that引导的宾语从句
that 是宾语从句的一个引导词,放在主句和从句之间。它引导的宾语从句由陈述句转化而来,故从句的语序不变。在that 引导的宾语从句中,that 作连接代词,无意义,在句中不作任何成分,在口语或非正式的文体中通常可以省略。
4.1.1.that 引导的宾语从句的用法
4.1.1.1. 位置:that 引导的宾语从句通常放在主句谓语动词(及物动词)、介词或形容词之后。
①作及物动词,如:say,think,tell,know,hear,see,hope,wish,remember,forget等的宾语。如: She says that she will help me learn English this evening. 她说今天晚上她会帮我学英语。
②作介词的宾语:连词that引导的名词性从句很少作介词的宾语,只用在except,but,in之后。如:
He is a good boy except that he is careless. 他是一个好男孩,只是有点儿粗心。
③作"be + 形容词"结构的宾语。某些形容词或过去分词后常接宾语从句,如:sure,glad,certain,pleased,sorry,happy,afraid等,连词that可省略。如:I’m happy (that) I pass