题目内容
20.A year is divided into four seasons,as we all know,______ the second is summer.( )A. | which | B. | of which | C. | of them | D. | when |
分析 众所周知,一年被分成四个季节,其中第二个季节是夏季.
解答 答案是B.本题考查关系词的选择;分析句子结构,除了非限制性定语从句as we all know外,题干中存在另一个从句,需要引导词,故排除C;题干中空格后面是修饰和限制名词four seasons的定语从句,把先行词four seasons带入到定语从句,完整的定语从句是"of the four seasons the second is summer";可见从句需要补充介词of,故选B.
点评 选择定语从句中的关系词,首先要理解各关系词的用法;然后找准先行词,将先行词带入到定语从句;最后根据先行词在定语从句中的作用判断关系词.
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