题目内容
15.If parents never expect their children to be helpful at home,they are sure _________.( )A. | not | B. | not to | C. | not to be | D. | not to be that |
分析 如果父母不指望孩子们在家勤快些,他们就必定不会(在家勤快).
解答 答案:C 考查否定句.不定式的否定形式是在to前加not,且本句中完整的主句应是:they are sure not to be (helpful at home).为了避免重复,将括号中的部分省略,且be要保留.故选C.
点评 解答此类问题时,要注意不定式的否定式是在to前加not.
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