托福语法题 seasonal rainfall, especially in regions near the tropics, is winds that blow in an opposite direction in winter than in summer.A. CausingB. That causeC. To causeD. What causes我选的A但答案是D,请讲解下这里为什么不能用现在分词?为什么用what causes? 谢谢
2019-05-02
托福语法题
___ seasonal rainfall, especially in regions near the tropics, is winds that blow in an opposite direction in winter than in summer.
A. Causing
B. That cause
C. To cause
D. What causes
我选的A但答案是D,请讲解下这里为什么不能用现在分词?为什么用what causes? 谢谢
优质解答
What causes seasonal rainfall is winds that blow in an opposite direction in winter than in summer.是这个句子的主干,两个逗号中间的内容通常是插入语,对句子主干内容进行相应补充说明,一般分析长句复杂句时,技巧之一就是先将插入语划去,忽略不计.
该句是一个主系表句型的句子,但句子的主语由主语从句What causes seasonal rainfall充当.同时句子的表语winds 又被定语从句 that blow in an opposite direction in winter than in summer所修饰,所以有点小复杂.
从选项中所得到的提示是：主语从句中有个动词cause,从语法角度分析的话,A选项是可以说得过去的,因为V-ing形式和to do(不定式)形式都是可以作主语的.
但按照这个句子所给的语境去翻译的话,我们发现A选项放到这里句子根本说不通,而选择D的话,表语winds正好解释了what的问题：What causes seasonal rainfall?--Winds [that...] causes seasonal rainfall.
What causes seasonal rainfall is winds that blow in an opposite direction in winter than in summer.是这个句子的主干,两个逗号中间的内容通常是插入语,对句子主干内容进行相应补充说明,一般分析长句复杂句时,技巧之一就是先将插入语划去,忽略不计.
该句是一个主系表句型的句子,但句子的主语由主语从句What causes seasonal rainfall充当.同时句子的表语winds 又被定语从句 that blow in an opposite direction in winter than in summer所修饰,所以有点小复杂.
从选项中所得到的提示是：主语从句中有个动词cause,从语法角度分析的话,A选项是可以说得过去的,因为V-ing形式和to do(不定式)形式都是可以作主语的.
但按照这个句子所给的语境去翻译的话,我们发现A选项放到这里句子根本说不通,而选择D的话,表语winds正好解释了what的问题：What causes seasonal rainfall?--Winds [that...] causes seasonal rainfall.