一、英语中的同位语意思是什么
句子中指代同一事物的两个词、片语或子句，称同位关系。例如：My sister, Helen Wilson, will travel with me. 句中My sister和Helen Wilson指的是同一个人，它们是同位成分，后一成分通常叫做前一成分的同位语。一个名词(或其它形式)对另一个名词或代词进行修饰，限定或说明，这个名词（或其它形式）就是同位语。
二、英语中的同位语怎么用
同位语从句在句中的位置
1.一般情况下同位语从句跟在某些名词(如news, idea, fact, promise, hope, message等)的后面，用以说明该名词所表达的具体内容。例如：
The news that our women volleyball team had won the championship encouraged us all greatly.我们女排赢得冠军的消息大大地鼓舞了我们所有人。
I&39;ve come from Mr Wang with a message that he won&39;t be able to see you this afternoon.我从王先生那边得知一个消息，他说他今天下午不能来看你了。
2.有时同位语从句可以不紧跟在它所说明的名词后，而被别的词语隔开，在语法上叫做分隔式同位语从句。例如：
The thought came to her that maybe she had left the door open when she left home.她突然想起可能在她离开家时没把门关上。
The story goes that he failed in the College Entrance Examinations again.据说他高考又落榜了。
小编推荐：英语中什么是同位语
同位语从句前名词的数
同位语从句前的名词通常用单数形式，并且往往带有限定词(word除外)加以修饰。例如：
Where did you get the idea that I could not come?你在哪儿听说我不能来？
Give me your promise that you will come to our party this evening.答应我，你今天晚上要来参加我们的晚会。
同位语从句连接词的选用
在英语中，引导同位语从句的词通常有连词(that, who, whether)，连接副词(how, when, where)等。例如：
They were all very much worried over the fact that you were sick.对你生病这件事，他们都很焦虑。
The question who should do the work requires consideration.谁该做这项工作，这个问题需要考虑。
We haven&39;t yet settled the question where we are going to spend our summer vacation.我们还没有决定到什么地方去度暑假。
注：在名词doubt“怀疑”后的同位语从句用whether连接；在no doubt“不怀疑”之后的同位语从句用that连接。例如：
We have some doubt whether they can complete the task on time.我们怀疑他们是否能准时完成任务。
There is no doubt that Zhang Wei will keep his promise.我们相信张伟会守信的。
同位语从句：that
有些名词的后面可以接that引导的同位语从句：
We came to the decision that we must act at once.我们做出决定：我们必须立即行动。
He made a proposal that the meeting be postpone.他提议会议延期。p分页标题e
There was little hope that he would survive.他幸存的希望很小。
