题目内容
4.We are now in a very difficult situation _________ we do not develop new products,we will end up closing our doors.( )A. | if where | B. | where | C. | if | D. | where if |
分析 我们现在处于如果不开发新产品就会关门的艰难处境中.
解答 答案选D择.本题考查关系词的选用.题干中situation后面的从句是修饰和限制situation的定语从句;定语从句中又包含了一个if引导的条件状语从句;将先行词situation带入到定语从句,从句完整地表达为"in the situation,if we do not develop new products,we will end up closing our door";可见,in the situation在从句中做地点状语,situation 是表示抽象地点的名词;定语从句中关系副词where指代地点,在从句中充当地点状语,所以本题答案为D.if 不能引导定语从句,所以排除A和C;B项where从句不完整,因为定语从句中还存在一个条件状语从句.
点评 本题考查关系词的选择.要在掌握各关系词的用法的基础上,找准定语从句的先行词,然后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以及各关系词的具体用法做出判断.
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