题目内容
9．-Shall we bring some food for tomorrow's camping？-I'm afraid you_________，because you can't buy any food on mountains．（ ）
| A． | must | B． | may | C． | can | D． | could |
分析 --明天野营我们需要带些食物吗？
--恐怕你们必须得带，因为在山上你们买不到任何食物．
解答 答案：A．must一定，必须；may可能；can可能，can和may在表示可能性上，can的语气比may要强烈，may要显得婉转．而且can多用于口语，在正式用于中多用may．在陈述句中，can的可能是指逻辑上的可能性，may的可能是指事实上的可能性．could可能（can的过去时，一般表示更委婉的请求）．根据 you can't buy any food on mountains，可知在山上你不可能买到任何东西，所以必须带一些食物．must一定，必须．故选A．
点评 本题考查了情态动词的用法．解答时注意区分辨别所给情态动词的意义和用法．
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