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不定式转换宾语从句老师多举例那样我会理解的好一点还要详细点谢谢老师

不定式转换宾语从句老师多举例那样我会理解的好一点还要详细点谢谢老师
不定式转换宾语从句老师多举例那样我会理解的好一点还要详细点谢谢老师

不定式转换宾语从句老师多举例那样我会理解的好一点还要详细点谢谢老师

答:“疑问词+动词不定式”可作一些及物动词的宾语,疑问词可以是what,which,who,whose等疑问代词,也可以是when,where,how等疑问副词;可以用此结构作宾语的动词有:know,decide,find out,tell,forget,remember,see,understand等。这类简单句往往是由含特殊疑问句变成的宾语从句的复合句转化改写而成的。

(1)She didn't know which blouse to buy. = She didn't know which blouse she should buy. 她不知道该买哪件衬衫。

(2)I'm thinking about what to say. = I'm thinking about what I should say.

我在考虑说什么。

(3) I could not decide which dictionary to buy. = I could not decide which dictionary I should buy.

我还没有决定买哪一本词典。

疑问词 + 动词不定式”构成的不定式短语是本话题的语法“主角”。想了解它的更多知识,请关注以下三个看点:

第一看点:“疑问词 + 动词不定式”的个性

此结构中疑问词包括疑问代词who, what, which以及疑问副词when, where, how等(不与why连用)。这些“疑问词 + 动词不定式”结构经常放在forget, find out, discuss, decide, tell, teach, know, learn, wonder, remember等动词之后作宾语。如:

I don't know what to do. 我不知道该做什么。

He told me how to answer all the questions in English. 他告诉我怎样用英语回答所有的问题。

第二看点:“疑问词 + 动词不定式”的功用

“疑问词 + 动词不定式”结构在句子中可以用作宾语、主语和表语等。如:

How to do it is a question. 如何做是个问题。(用作主语)

He knows what to do and what not to do. 他知道该做什么,不该做什么。(用作动词宾语)

The question is how to put it. 问题是应该把它如何放才好。(用作表语)

第三看点:“疑问词 + 动词不定式”的转换

“疑问词 + 动词不定式”结构相当于一个名词性从句,常常可用同等成分的从句代替。改写后的句子需要在疑问词后加上相对应的主语,并要注意主谓语单复数的一致性。如:

The question is where to put it. →The question is where we should put it. 问题是应该把它放在哪里才好。

一些动词如tell, know, ask, show, teach, find (out), forget等都可接“疑问代(副)词(why 除外) + 不定式”作宾语,充当简单句,其意义相当于一个宾语从句。这种句式可转化为含宾语从句的复合句。当然在句型转换中,并非所有的宾语从句都能转换为“疑问词 + 不定式”结构。

看一下下面的情况:

主句的谓语动词是decide, hope, wish, know, forget等时,句子中的“疑问词 + 动词不定式”结构可转化为宾语从句。此时从句的主语和主句的主语相同。如:

We can't decide when to start. →We can't decide when we should start.

We don't know what to do next. →We don't know what we should do next.

注:主句的谓语动词是tell, ask, teach, show等,并且从句主语一致时,宾语从句可转化为“疑问词 + 不定式”结构。如:

Please tell us where we show our tickets.→Please tell us where to show our tickets.

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