名词性从句which的用法？

名词性从句which的用法？

which引导名词性从句，有“哪一个”的含义，常有如下用法：1.宾语从句。which是一个连接代词,在宾语从句中可以充当主语，宾语或定语。意思是“哪一个”如：I don't know which bike belongs to my father.我不知道哪辆车是我爸爸的。2.主语从句。which 在主语从句中的用法与宾语从句相类似。如：which boy she likes best is still a mystery.她喜欢哪个男孩还是秘密。3.表语从句。which 在表语中的用法与主语从句和宾语从句的用法也相似。如：The question is which place he wants to go to .问题是他想去哪个地方。4.同位语从句。which在同位语从句中的用法不多，只用在某些名词的后面，常见的有idea。如：I have no idea which picture is the most beautiful of all.我不知道哪幅画是这些画中最漂亮的。

名词性从句可以用which,who,when, where,that等引导，其中which强调“哪一个”，在从句中充当主语，宾语，定语等成份。举例说明，the question is which is wrong.