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专题三 情态动词
————————————◄ 对 点 训 练 ►———————————
Ⅰ.单句语法填空(高考真题改编)
1. (2023年天津卷)I can't find my purse. I ________ have left it in the supermarket yesterday, but I'm not sure.
解析：句意：我找不到我的钱包了。我可能昨天把它落在超市了，但我不确定。空处表示对过去事情的推测，且根据题干中的I'm not sure可推知，此处表示不确定的推测，故用could/might/may，意为“可能〞。
答案：could/might/may
2. (2023年北京卷)In today's information age, the loss of data ________ cause serious problems for a company.
解析：句意：在当今这个信息时代，对于一个公司来说，数据的丧失可能会造成严重的后果。根据句意可知，语境要表达的是一种客观的可能性，且cause为动词原形，因此can符合语境。
答案：can
3. (2023年天津卷)Sure, I ________ (ask) her, but something prevented me from doing so.
解析：could have done意为“过去本来能够做某事但事实上并没有做〞。
答案：could have asked
4. (2023年北京卷)Samuel, the tallest boy in our class, ________ easily reach the books on the top shelf.
解析：句意：Samuel，我们班最高的男生，能很轻松地够到书架顶上的书。表示能力，用can。
答案：can
5. (2023年天津卷)My room is a mess, but I ________ clean it before I go out tonight. I can do it in the morning.
解析：句意：我的房间很乱，但是在今晚我出去之前不需要清扫，我可以明天早晨再清扫。needn't意为“不需要，不必〞。
答案：needn't
6. (2023年浙江卷)George ________ (go) too far. His coffee is still warm.
解析：句意：乔治不可能走太远，他的咖啡仍是温的。can't have gone意为“不可能走(远)〞，是对过去情况的否认推测，符合语境。
答案：can't have gone
7. (2023年北京卷)I love the weekend, because I ________ get up early on Saturdays and Sundays.
解析：句意：我喜欢周末，因为周六周日我不用早起。根据句意可知，应填needn't。
答案：needn't
8. (2023年天津卷)It was really annoying; I ________ get access to the data bank you had recommended.
解析：句意：真烦人，我无权使用你推荐的资料库。couldn't意为“不能〞，符合语境。
答案：couldn't
9. (2023年天津卷)I needn't________ (worry) before I came to the new school, for my classmates here are very friendly to me.
解析：句意：我来新学校之前本没有必要担忧的，因为在这里我的同学对我非常友好。needn't have done意为“本没有必要做某事而实际上已经做了〞。
答案：have worried
10. (2023年重庆卷)You________ be Carol. You haven't changed a bit after all these years.
解析：句意：你肯定是卡罗尔。你这么多年一点儿都没变。 must表示对现在的肯定推测。
答案：must
Ⅱ.单句改错
1. (2023年全国卷Ⅱ)...but no matter how many times I asked to watch them, my parents would not to let me.
_________________________________________________________________
解析：would是情态动词，后跟动词原形，故去掉let前的to。
答案：去掉let前的to
2. (2023年浙江卷)Then he and my mother would have had a drink while she prepared dinner and they would talk about his day and hers.
_________________________________________________________________
解析：would表示过去常常，后跟动词原形，故去掉had。
答案：去掉had
3. (2023年全国卷Ⅰ)We must found ways to protect our environment.
_________________________________________________________________
解析：must为情态动词，后跟动词原形，故把found改为find。
答案：found→find
4．You had better not to smoke here. Smoking is forbidden in this room.
_________________________________________________________________
解析：had better意为“最好〞，后跟动词原形，故去掉to。
答案：去掉to
5．Judging from what you said, he ought succeed.
_________________________________________________________________
解析：ought to 意为“应该，应当〞，故在ought后加to。
答案：ought后加to
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