◇ Modal Verbs
情態助動詞
情態助動詞的功能正是表達不同情境或不同態度。它們都被放在主要動詞之前，能傳達的有能力、意願、請求、許可、命令、客氣、義務、責任、告誡、或可能性等等許多意思。情態助動詞有：can, could, may, might, must, ought to, shall, should, will, would。
Example：
1. I'm so nervous about presenting that I might burst into tears.
對於報告緊張到我可能會突然到大哭。
2. I don't understand the purpose of taking a taxi. We could totally walk there!
我不理解為什麼要搭計程車。我們根本可以走過去的。
3. He kept waiting till midnight because his girlfriend promised that she would come.
他一直等到半夜，因為他女友答應說他會來。