modal verb

In the sentence "You must wear a seatbelt," the word "must" is a modal verb.

(Chinese) 在“You must wear a seatbelt”这个句子中，单词“must”是一个情态动词。

English learners often find it tricky to distinguish between different modal verbs like "may" and "might."

(Chinese) 英语学习者常觉得区分“may”和“might”等不同的情态动词很困难。