a sail is to a boat what an engine is to a car为什么是表语从句

问题描述:

a sail is to a boat what an engine is to a car为什么是表语从句
1个回答 分类:英语 2014-11-06

问题解答:

我来补答
表语从句就是用一个句子作为表语.说明主语是什么或者怎么样,由名词、形容词或相当于名词或形容词的词或短语充当,和连系动词一起构成谓语.
a sail is to a boat what an engine is to a car.
船帆对于船来说就是汽车的引擎.
这句话里what an engine is to a car是表语,用来修饰主语sail
 
 
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