TheweatherinNingboisrathercoldinwinter,especiallywhen____thatinmyhom

The weather in Ningbo is rather cold in winter, especially when ____ that in my hometown.A.having compared to B.comparing to C.compare toD.compared to

D解析试题分析：句意：宁波的天气在冬天是相当冷的，尤其是当与家乡的天气相比时。When后是省略句，完整的是when it is compared to that in my hometown.当从句的主语与主句的主语一致，并且从句的谓语动词有be时，这时从句的谓语动词be与主语都可省去。故选D。考点：考查省略的用法。点评：本题难度适中。为了使话说得简明扼要，英语句子中某个单词、短语甚至从句或主句都可以省去。这种省去句子某些成分而保持句子意思不变的现象，称为省略。它是高中阶段的重要的语法项目，需要考生仔细分析句子结构，来确定省略的内容。即学即练：If ____ , ice can be turned into water. A. to heat B. heating C. heats D. heated解析：D。考查省略句。If heated= If the ice is heated。

就是这个解释