这个定语从句为什么要用“which”?New zeland has a population of

这个定语从句为什么要用“which”?New zeland has a population of

因为此句是非限定性定语从句,that与which的用法区别中有提到：1.引导非限制性定语从句时,通常要用which例句：The current,which is very rapid,makes the river dangerous.水流湍急,使这条河很危险.He has to work on Sundays,which he doesn’t like.他得在星期天工作,他是不喜欢这样的.The London team,which played so well last season,has done badly this season.伦敦队上一个季度打得很好,这个季度却打得很差.2.直接放在介词后作宾语时,通常要用which：She may be late,in which case we ought to wait for her.她可能晚到,那样我们就要等等她.The documents for which they were searching have been recovered.他们找寻的文件已找到了.This morning some port wine came,for which I have to thank you.今天早上送来一些波尔图葡萄酒,为此我得向你道谢.注：有时“介词+which”引导的定语从句可以转换成“介词+which+不定式”结构：He had only the long nights in which he could study.=He had only the long nights in which to study.他只有漫漫长夜可用来学习.而此句中,有逗号隔开,是非限定性定语从句的标志,且关系词which前有介词of,故用which.希望那个你能明白!======以下答案可供参考======供参考答案1:非限定性定语从句,所以用which供参考答案2:是 ,of which,这是分隔式定语从句，population的介词是of，which指代提到过的population，没有用that的。供参考答案3:关键是of后面，决对不能放that

这个答案应该是对的