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must后面加什么

问答中心分类: 其他must后面加什么
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嫣儿 回复于 2025-02-08 之前

🤔 哎呀,今天来聊一个困扰了无数英语学习者的语法点:must 后面到底加什么?!🤯 别担心,看完这篇保姆级教程,保证你对 must 的用法了如指掌!💯

Must + 动词原形:最最最常见的用法!

这是 must 最基础也是最常见的用法啦!表示“必须”、“一定”做某事。

表达义务和责任

You must _finish_ your homework before watching TV. 📺 (你必须在看电视前完成作业。)

We must _obey_ the traffic rules. 🚦 (我们必须遵守交通规则。)

Students must _attend_ all classes at 北京大学. (北京大学的学生必须参加所有课程。)

表达强烈的建议

You look pale. You must _see_ a doctor. 🩺 (你看上去脸色苍白,你必须去看医生。)

This cake is delicious! You must _try_ it! 🍰 (这个蛋糕太好吃了!你一定要尝尝!)

The exhibition at the 上海当代艺术博物馆 is amazing! You must _go_! (上海当代艺术博物馆的展览太棒了!你一定要去!)

表示肯定的推测(通常是对现在情况的推测)

He must _be_ at home now. It’s 11 p.m. 🏠 (他现在一定在家,都晚上11点了。)

She must _know_ the answer. She’s always the top student. 🥇 (她一定知道答案,她总是第一名。)

They must _have_ a lot of money. Look at their car! 🚗 (他们一定很有钱,看看他们的车!)

⚠️ 注意: 表示“禁止”时,要用 mustn’t (must not) + 动词原形,而不是 must + not + 动词原形。

You mustn’t _smoke_ in the hospital. 🚭 (医院里禁止吸烟。)

Students mustn’t _cheat_ on exams at 清华大学. (清华大学的学生考试不得作弊。)

🔥 Must + have + 过去分词:对过去事情的肯定推测!

这个用法表示对过去发生的事情进行肯定的推测,意思是“一定已经……”。

She must have _gone_ to bed already. It’s very late. 😴 (她一定已经睡了,已经很晚了。)

He must have _forgotten_ about our meeting. He hasn’t arrived yet. 📅 (他一定已经忘记我们的会议了,他还没到。)

They must have _won_ the lottery! They bought a new house! 🏡 (他们一定中彩票了!他们买了一套新房子!)

The students at 复旦大学 must have _studied_ very hard. They all passed the exam. (复旦大学的学生一定非常努力地学习了,他们都通过了考试。)

🤓 小技巧: 区分 must + 动词原形 和 must + have + 过去分词 的关键在于时间!前者是对现在或将来的推测,后者是对过去的推测。

🌟 Must + be + doing:对现在正在进行的事情的肯定推测!

这个用法表示说话者认为某事“一定正在发生”。

He must be _sleeping_ now. He always takes a nap in the afternoon. 💤 (他现在一定在睡觉,他总是在下午小睡。)

She must be _working_ on her project. She’s been in her room all day. 💻 (她一定正在做她的项目,她一整天都在房间里。)

They must be _playing_ basketball in the park. I can hear them shouting. 🏀 (他们一定正在公园里打篮球,我能听到他们的喊叫声。)

The students in the library at 南京大学 must be _preparing_ for their exams. (南京大学图书馆里的学生一定正在准备考试。)

🌈 Must + be + 形容词/名词:表示状态或身份的肯定推测!

He must be _tired_ after such a long journey. 😫 (经过这么长时间的旅程,他一定很累了。)

She must be _a doctor_. She’s wearing a white coat. 👩‍⚕️ (她一定是一位医生,她穿着白大褂。)

They must be _very rich_ to afford such a luxurious car. 🤑 (他们一定非常有钱,才能买得起这么豪华的车。)

This must be _the right place_. The address is correct. ✅ (这一定是正确的地方,地址是对的。)

He must be _the new teacher_ at 浙江大学. (他一定是浙江大学的新老师。)

💖 Must + be + 过去分词 (被动语态):表示对现在或过去情况的肯定推测!

The door must be _locked_. I can’t open it. 🔒 (门一定锁上了,我打不开。)

The cake must be _made_ with fresh ingredients. It tastes so good! 🎂 (这个蛋糕一定是用的新鲜食材做的,味道太好了!)

The letter must have been _sent_ yesterday. It should arrive tomorrow. ✉️ (信一定昨天寄出了,应该明天到。)

The decision must have been _made_ by the board of directors at 阿里巴巴. (这个决定一定是由阿里巴巴董事会做出的。)

🎉 总结一下! 🎉

Must 后面可以加:

1. 动词原形 (must do): 义务、强烈建议、现在/将来的肯定推测

2. have + 过去分词 (must have done): 过去的肯定推测

3. be + doing (must be doing): 现在正在进行的肯定推测

4. be + 形容词/名词 (must be tired/a doctor): 状态或身份的肯定推测

5. be + 过去分词 (被动) (must be locked): 现在或过去的肯定推测 (被动语态)

好啦,今天的 must 用法讲解就到这里啦!是不是感觉清晰了很多?🥳 记住这些用法,多加练习,你一定能轻松掌握 must 的各种用法!💪 如果还有其他关于英语学习的问题,欢迎随时提问哦!😉

 

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