题目内容
18.-May we leave the classroom now?-No,you .You to leave until the bell rings.( )
| A. | must; are allowed | B. | can't; aren't supposed | ||
| C. | needn't; aren't allowed |
分析 --我们现在可以离开教室吗?
--不,你们不能,直到下课铃响了,才可以离开..
解答 答案:B.根据May we leave the classroom now?以及No,可知考查以may引导的一般疑问句的否定回答,can't表示不能够,用于回答may引导的一般疑问句,再根据You 可知,suppose的用法表示"被期望"时,是被动语态,如:You are supposed to be a singer.表示"应该"或否定句时"不许",是固定词组,在这里是一个固定词组.表示不许的意思.故选B.
点评 情态动词是中考的必考语言点.情态动词表必要性时用must(必须)与don't have to/needn't(不必要);表推测时用must (肯定、一定)与 can't/couldn't (不可能);表请求和许可时can/may(可以、能够)与can't/mustn't(禁止、不许).
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