题目内容
8．Can you explain ________ the WTO can control the price of oil？（ ）| A． | how is it that | B． | what it is that | C． | how it is that | D． | what is it that |
分析 你能不能解释一下世贸组织如何能控制油价？
解答 答案为C．本题考查名词性从句中引导词、语序和强调句型的综合运用．题干空格后面是动词explain后面的宾语从句，根据句意"如何控制油价"判断选用how引导，而how又被强调句型所强调．强调句型的基本结构是"It be+被强调部分+that（被强调的是人可以用who）+其它"．如果被强调的是特殊疑问词，特殊疑问词要放在句首，构成"特殊疑问词+be it that+其它"，本题中被强调的是how，所以结构是"how is it that…"．本句是名词性从句，必须用陈述语序，因此陈述语序为"how it is that"，由此判断答案是C．
点评 名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．
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