4.There is a new problem involved in the popularity of private cars ___road conditions need -A.that; to be improvedB.which; to be improvedC.where; improvingD.when; improving第一个空如何辨别是同位语,而不是地点状语

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4.There is a new problem involved in the popularity of private cars ___road conditions need -A.that; to be improvedB.which; to be improvedC.where; improvingD.when; improving第一个空如何辨别是同位语,而不是地点状语
4.There is a new problem involved in the popularity of private cars ___road conditions need -
A.that; to be improved
B.which; to be improved
C.where; improving
D.when; improving
第一个空如何辨别是同位语,而不是地点状语

4.There is a new problem involved in the popularity of private cars ___road conditions need -A.that; to be improvedB.which; to be improvedC.where; improvingD.when; improving第一个空如何辨别是同位语,而不是地点状语
首先,地点状语修饰的是地名,而这里的主语是problem.
其次,由于被修饰的是problem,从句的内容又是problem的具体解释,从句是同位语.
by the way,need 后面加to,to be improved 是被动语态.

选A,很明显后面是对problem的描述说明,句子也没有对地点的描述需要

因为involved后到cars这一段是problem的定语,起解释说明作用。