本文目录
情态动词是英语语法中的重要部分，它们可以用来表达不同的意思和情感。以下是常用的八个情态动词及其用法。
1. Can
Can 表示能力或许可，其否定形式为 cannot 或 can't。例如：
- I can speak Chinese. (我会说中文。)
- She can't come to the party tonight. (她今晚不能来参加聚会。)
2. May
May 表示许可或可能，其否定形式为 may not。例如：
- May I use the restroom? (我可以去洗手间吗？)
- It may rain later. (今天可能下雨。)
3. Must
Must 表示必须或推测，其否定形式为 must not 或 mustn't。例如：
- You must finish your homework before you can play. (你必须先完成作业才能玩。)
- She must be tired after working all day. (她一整天工作后肯定很累。)
4. Should
Should 表示应该或建议，其否定形式为 should not 或 shouldn't。例如：
- You should eat more vegetables for better health. (为了健康你应该多吃蔬菜。)
- She shouldn't stay up too late. (她不应该熬夜。)
5. Could
Could 表示过去的能力或请求，其否定形式为 could not 或 couldn't。例如：
- When I was young, I could run very fast. (我小的时候跑得很快。)
- Could you please pass me the salt? (你能把盐递给我吗？)
6. Would
Would 表示假设或客气的请求，其否定形式为 would not 或 wouldn't。例如：
- If I had more time, I would go on a trip. (如果我有更多时间，我会去旅行。)
- Would you mind closing the window? (你介意关一下窗户吗？)
7. Ought to
Ought to 表示应该或建议，其否定形式为 ought not to 或 oughtn't to。例如：
- You ought to apologize for what you said. (你应该为你说的话道歉。)
- He oughtn't to drive after drinking alcohol. (他喝了酒后不应该开车。)
8. Need
Need 表示需要或必须，其否定形式为 need not 或 needn't。例如：
- You need to study hard for the exam. (你需要为考试努力学习。)
- He needn't worry about the meeting. (他不必担心会议。)
以上就是常用的情态动词八个用法，希望对你的英语学习有所帮助！
