The population of the city is three times ----it was 50 year

问题描述:

The population of the city is three times ____it was 50 years ago. A.what B.that
为什么选A不选B
1个回答 分类:英语 2014-11-03

问题解答:

我来补答
因为这个被比对象--名词性从句 ____it was 50 years ago缺表语, 所以只有选what= the population that(which)

而that 引导名词性从句时本身无意义, 不能在从句中充当任何成分



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