文档介绍：同位语从句
主句中有些名词词义比较抽象,如belief, doubt, fact, hope, idea, thought等,它们往往要求用从句来具体说明这一名词的实际内容或对该名词作进一步解释。这种从句称为同为语从句。同为语从句一般由that引导,that一般不省略。有时也可由其他连接词引导,如who, why, how, whether等。
1. 由that引导的同位语从句
同位语从句常放在某些名词后面做同位语,如answer,belief, conclusion, evidence, excuse, fact, fear, hope, idea, news, opinion, possibility, problem, remark, saying, suggestion.
The order came that we (should) leave at once.
I had no idea that you were here.
The news that he intended e gave us much pleasure.
An idea occurred to him that he might go there by air.
2. 由wh-类连接词和whether 引导的同位语从句。如:
The question who should do the job requires consideration.
I have no idea how soon they ing.
The problem, why you are going to give up the plan, has not been answered yet.
They are faced with the problem whether they should continue the work.
同为语从句中whether 不能换成if.
1. Often, the fact ____ unemployed people get help from the government____ this from happening, but not always.
A. how, to prevent B that, prevents C how, preventing, D why, prevented
2. Evidence has been piled up ____ drinking water after getting up in the morning contributes to one’s health.
A what B which C if D that
3. The warning we were given as children ____ an apple a day keeps the doctor away may, in fact, has a scientific explanation.