在英语语法中,有些情态动词后面需要跟动词原形,包括”can”、”could”、”may”、”might”、”must”、”shall”、”should”和”will”。这些情态动词分别用于表达能力、许可、可能性、必要性、建议、意愿等不同的情感和意愿。
1. Can
Can 是一个常用的情态动词,表示能力或许可性。它后面跟动词原形,如:
- I can swim.
- Can you help me with my homework?
2. Could
Could 是 Can 的过去式,表示过去的能力或许可性。它也后面跟动词原形,如:
- I could speak Spanish when I was younger.
- Could you please pass me the salt?
3. May
May 用于表达许可或请求。它后面也跟动词原形,如:
- May I use your phone?
- You may leave the room now.
4. Might
Might 表示可能性或疑虑,也可以用于请求。它也后面跟动词原形,如:
- It might rain tomorrow.
- Might I ask you a question?
5. Must
Must 表示必须或推测。它后面也跟动词原形,如:
- I must finish my work before I leave.
- You must be tired after running so much.
6. Shall
Shall 用于提出建议、请求或询问。它后面也跟动词原形,如:
- Shall we go to the movies tonight?
- I shall do my best to help you.
7. Should
Should 用于提出建议或表示期望。它也后面跟动词原形,如:
- You should eat more vegetables for your health.
- He should arrive soon.
8. Will
Will 用于表达意愿、承诺、预测或请求。它后面也跟动词原形,如:
- I will call you later.
- Will you please pass me the butter?