在复合句中作主句的宾语,引导词有:
连词:that (that 常可省略),whether, if
代词:who, whose, what ,which
副词:when ,where, how, why 等。
(一)that引导的宾语从句(在非正式场合that可以省略)
可跟that从句做宾语的动词有:
say, think, insist, wish, hope, demand, imagine, wonder, know, suppose, see, believe, agree, admit, deny, expect, explain, order, command, feel, dream, suggest, hear, mean, notice, prefer, request, require, propose, declare, report等。
例句:The boy believes that he will travel through space to other planets.
注意事项:当主句谓语动词是 think, believe, suppose, expect 等词,而宾语从句的意思是否定时,常把否定转移至主句表示。
例句:I don’t think it is right for him to treat you like that.
在以下情况中that不能省略
1、当句中的动词后接多于两个由that引导的宾语从句时,第一个that可省,但后面的that不可省。
例句:He said (that) you were too young to understand the matter and that he was asked not to tell you.
2、当主句的谓语动词与that宾语从句之间有插入语时,that一般不可省。
例句:Just then I noticed, for the first time, that our master was wearing his fine green coat and his black silk cap.
3、当that从句是双宾语中的直接宾语时,that不可省。
例句:I can’t tell him that his mother died.
注意事项:许多带复合宾语的句子,that引导的宾语从句经常移到句子后部,而用it作形式宾语。
例句:I find it necessary that we should do the homework on time.
(二)由whether,if 引导的宾语从句
由whether(if)引导的宾语从句,实际上是一般疑问句演变而来的。意思是“是否”。宾语从句要用陈述句语序。一般说来,在宾语从句中whether与if可以互换使用,但在特殊情况下if与whether是不能互换的。
例句:I wonder whether(if) they will come to our party.
只能用whether,不能用if引导的宾语从句
1、在带to的不定式前
例句:We decided whether to walk there.
2、在介词的后面
例句:I’m thinking of whether we should go to see the film.
3、在动词后面的宾语从句时
例句:We discussed whether we had a sports meeting next week
4、直接与or not连用时
例句:I can’t say whether or not thet can come on time.
只能用if不能用whether引导的宾语从句
1、if引导条件状语从句,意为“如果”
例句:The students will go on a picnic if it is sunny.
2、if引导否定概念的宾语从句时
例句:He asked if I didn’t come to school yesterday.
3、引导状语从句even if(即使)和as if(好象)时
例句:He talks as if he has known all about it.
(三)连接代词和连接副词引导的宾语从句
这样的宾语从句实际上是由特殊疑问句变化而来的,宾语从句要用陈述句语序。用于这种结构的动词常常是:see, say, tell, ask, answer, know, decide, show, find out, imagine, suggest, doubt, wonder, discover, understand, inform, advise等。
英语中的连接代词有:who,whom,whose,which,what,在句中担任主语、宾语、定语或者表语。
例句:Can you tell me whom you are waiting for?
英语中的连接副词有:when,where,why,how,在句中担任状语的成分。
例句:None of us knows where these new parts can be bought.
宾语从句引导词的用法是什么 扩展
宾语从句的引导词就是用来连接宾语从句的关系代词或关系副词。那么在宾语从句中,陈述句的引导词是由that来引导,一般疑问句是用if或者whether来引导,特殊疑问句的引导词,直接用疑问词来引导,主要是wh开头的疑问词和How。宾语从句中用的都是用陈述句语序。
宾语从句引导词的用法是什么 扩展
宾语从句用法
时态:
1.主句用一般现在时,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。
一、宾语从句的连接词
从属连词
连接宾语从句的从属连词主要有that,if,whether.
that引导表示陈述句的宾语从句,
if和whether引导表示“是否”的一般疑问句的宾语从句.
He told me (that he would) go to the college the next year他告诉我他明年上大学.
I don’t know if there will be a bus any more.我不知道是否还会有公交车.
Nobody knew whether he could pass the exam.