题目内容
1.She doesn't know________.( )| A. | what she can do it | B. | what to do it | ||
| C. | how to do | D. | how to do it |
分析 她不知道该如何做这件事?
解答 答案:D.这里用疑问词+to do 作为宾语,what作为从句的宾语,how做状语,故how to do it或者用what to do做宾语,表示该做什么;故选D.
点评 "疑问词+动词不定式"结构中的疑问词,包括疑问代词what which who和疑问副词when how where 等.这些疑问词和不定式一起构成了不定式短语,这种结构在句子中除了不能作谓语外,可做主语、宾语、表语等.例如:
1.She didn't know which bus to take.她不知乘哪路公共汽车.(做动词宾语) We must first solve the problem of whom to serve.我们必须首先解决为谁服务的问题.(做介词宾语)
2.When to start remains undecided.何时出发,尚未决定.(做主语)
3.The difficulty is how to do the most of work with the least of money.困难是如何尽量少用钱多办事.(做表语)
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