1. 你不應(yīng)該讓士兵們冒不必要的危險(xiǎn)。
   You shouldn't expose the soldiers to unnecessary risks.
2. 你不必起得那么早。
   You need not have got up so early.
3. 當(dāng)時(shí)他不必來(lái)。（但卻來(lái)了）
   He need not have come. (But he came.)
4. 即使他這么說(shuō)，你大可不必相信他。
   Even if he said so, you need not believe him.
5. 那天天氣很好，我原本不必帶傘的（但卻帶了）。
   It was fine that day, so I need not have brought an umbrella with me.

不的英語(yǔ)翻譯：

必的英語(yǔ)翻譯：