题目内容
10.I am not surewhether(是否) he has gone abroad or not.分析 我不知道他是否出国了.
解答 答案:whether 是否,if/whether,whether引导的从句,常可以与or或or not直接连用,而if一般不能.根据题干I am not sure___(是否) he has gone abroad or not.句子末有or not.故填:whether.
点评 本题主要考查完成句子,首先要根据所给提示,然后根据句式特点,结合句意和词性,确定单词的适当形式,最后把句子补充完整.就本题而言主要考查whether.
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