2017英语专四语法考点：同位语从句

2017英语专四语言知识题型分值为20分，与专四作文及听力分值相同，可见其重要性。根据历年专四真题中语法词汇题的总结，从句是语法考点的难点，新东方在线专四频道将为大家详细讲解2017英语专四语法考点13类从句。

接同位语从句的词有：answer, belief, concept, decision, discovery, problem, promise, statement, probability 等。

同位语从句多由that 引导，疑问代词who, which, what 和疑问副词where, when, how, why 也可以。

The news that he has won the game is exciting.

It is the question where we should have dinner.

一、定义

一个名词或代词后面有时跟一个名词或起名词作用的成分，对前者进一步说明，叫做同位语。在某些抽象名词后可以用that, whether, when等引导的从句作同位语，称为同位语从句。这些名词有：

agreement一致意见assumption假定awareness意识

belief看法conclusion结论conviction深信

decision决定delusion错觉determination决心

discovery发现doubt怀疑dream梦想

evidence证据explanation解释fact事实

feeling感觉guarantee保证guess猜测

hope希望idea观点knowledge认识

likelihood可能性message信息mind想法

news消息notion观念objection反对

opinion观点possibility可能性prediction预测

probability可能性problem问题proof证据

proposal建议proposition论点、主张question问题

realization认识rumor传闻sign迹象

truth事实theory理论thought想法

二、结构

(一)由that引导

·I have no doubtthat he will overcome all this difficulties.

他会克服一切困难，对此我并不感到怀疑。

【特别提示】：同位语从句引导词that不可省略。

(二)由whether引导

·The questionwhether we need more time to do the workhas not been decided.

我们是否需要