题目内容
11．-Fifty dollars for such a T-shirt!You _____ be joking!-I'm serious．It's made of silk．（ ）
| A． | must | B． | need | C． | may | D． | can |
分析 句意：--这样一件T恤需要50美元．你肯定在开玩笑！
--我是认真的，它是丝质的．
解答 答案：A．A．must一定，必须；B．need需要；C．may可能；D．can能，会．根据Fifty dollars for such a T-shirt!可知这里表示这样一件衣服不可能50美元，一定是在开玩笑．must，一定，必须．故选A．
点评 情态动词是中考的热点，情态动词除了表推测外，还可以表达另外的意思，如must理解为必须，由这个词所开头的问句，肯定回答用Yes，you must．否定回答用No，you needn't或者是No，you don't have to．注意不用mustn't，因为mustn't表示例行禁止的含义．
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