I had to give my helpers clear instructions about what kind of sample population I wanted them to use.这句话中'''''about wha

问题描述:

I had to give my helpers clear instructions about what kind of sample population I wanted them to use.这句话中'''''about what kind of sample population 是作什么成份''''''about 介词后可以接句子吗? I wanted them to use 又作什么成份?是从句吗?谢谢解答!

about what kind of sample population 是介短作定语修饰instructions;
about 介词后可以接句子,作介词的宾语.但此句中的about后接的是短语 what kind of sample population ;
I wanted them to use 是定从修饰population.
句意:我必须给我的助手明确指示我需要他们使用什么类型的抽样人口.谢谢'''我还有疑问''''''''介词除了接动名词'名词还可以接句子的是吗?你说的那种情况是不是仅限于介词加which作定语从句的时候?I want them to use如果是作定语从句'''可我感觉从句不缺成份啊'''定语从句中which,that不是要在句中作成份吗?而且这里为什么把that给省了?这个定从中to use缺宾语,本来可用which,that,但因是作宾语,所以省略了.I want them to use (what kind of sample population )介词后可以接句子, 不是仅限于介词加which作定语从句的时候,其它情况也可: I want to get information about when iphone 5 will be on sale in * .them不是宾语吗?to use是宾补把?我就是这点没想通them是动词want的宾语, 你说得对,to use是宾补, 但 use是及物动词,它必须带宾语, 因此to use的宾词就是先行词组what kind of sample population好'''知道了'''谢谢!