本文目录
情态动词是英语语法中的重要部分，它们用于表示说话人的态度，意愿，可能性，能力和义务等。在英语中，情态动词通常与动词原形一起使用，形成情态动词词组，今天我们将介绍一些常用的情态动词词组。
1. Can't help but
这个短语用来表示某人无法控制自己的感情或行为，例如：
- I can't help but feel sorry for her.
- He couldn't help but laugh at the joke.
2. Would rather
这个短语用来表示某人的偏好或选择，例如：
- I would rather stay at home than go out tonight.
- He would rather have tea than coffee in the morning.
3. Should have
这个短语用来表示过去本应该做某事，但是未能做到，例如：
- I should have studied more for the exam.
- He should have listened to his parents' advice.
4. Must have
这个短语用来表示某件事情在过去一定发生了，例如：
- She must have left her phone at home.
- He must have forgotten about our appointment.
5. Could have
这个短语用来表示在过去某人本可以采取某些行动但是未能采取，例如：
- I could have gone to the party last night, but I decided to stay home.
- He could have passed the exam if he had studied harder.
以上就是几个常用的情态动词词组，它们在英语中使用频率很高，掌握它们将有助于提高英语的表达能力和交流能力。
