题目内容
8．If you _____ smoke，please go outside．（ ）| A． | can | B． | may | C． | must | D． | might |
分析 句意：如果你非要吸烟，请你去外边吸．
解答 答案：C can能够，表示能力；should表示应该；must表示必须；may表示可能．根据please go outside．请你去外边吸．推测可知：上文应该是如果你非要吸烟，故填must，故选：C．
点评 主要考查情态动词，一定注意情态动词的含义和用法，然后根据句意，来推测所需的情态动词．本题主要考查must的用法．
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