情態助動詞 must 的用法

表示責任、義務,『必須』的意思

Children must do their homework.

兒童必須要做功課。

I must phone my mom.

我必須打電話給我媽媽。

表示告誡; 命令

You simply must be careful.

你只是須要小心。

You must tell me the truth.

你一定要告訴我真相。

must 的否定是 mustn't

You mustn't open other people's letters.

你不能打開別人的信。

mustn't - "不允許"。

There's no school tomorrow; I needn't do homework today.

明天不用上學;今天我不需要做功課。

讀者應該區別 mustn't 和 needn't 的不同用法。mustn't 指的是不允許或有必要不那麼做。 needn't 是沒有必要去做,但如果我們想要,也可以去做。

must 的猜測用法

Listen! It must be raining outside.

你聽,外面一定在下雨。

使用must ,是一種很有把握的猜測語氣。

If you come to the Taiwan Test Central website often, you must be very interested in learning English.

如果您經常來台灣測驗中心網站,你一定是對學習英語很感興趣。

you must be very interested - 一種猜測的語氣。

You must be kidding me.

你一定是在開玩笑吧。

也可以用 you have got to be kidding me. 來表達。
have got to = must,本句 you have got to be kidding me. 是現在式。

  • 參賽作品不得不遲於2014年7月19日以郵戳為準。
  • Entries can be postmarked no later than July 19, 2014.
  • Entries must be postmarked no later than July 19, 2014.
  • 由於食物過敏,傑森必須遠離雞蛋,貝類,大豆和堅果。
  • Due to food allergies, Jason is able to stay away from eggs, shellfish, soy, and tree nuts.
  • Due to food allergies, Jason must stay away from eggs, shellfish, soy, and tree nuts.

Grammar



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