must
modal
v (neg 否定式 must not, contracted form 縮約式 mustn't )
1
(a) (indicating obligation 表示必要)
I must go to the bank to get some money. 我得到銀行去取些錢.
When you enter the building you must show the guard your pass. 進入大樓時須向警衛(wèi)出示通行證.
Cars must not park in front of the entrance. 入口處不得停放汽車.
You mustn't open the oven door before the cake is ready. 餅未熟不得打開烤箱的門.
We mustn't be late, must we? 我們不能遲到, 是吧?
`Must you go so soon?' `Yes, I must.' ｀你一定得這麼早就走嗎?＇｀是的, 必須這麼早.＇ =>Usage 1 見所附用法第1項.
(b) (indicating advice or recommendation 表示勸告或建議)
We must see what the authorities have to say. 我們應(yīng)該看看當(dāng)局怎麼說.
I must ask you not to do that again. 我得勸你不要再做那種事情了. =>Usage 2 見所附用法第2項.
2 (drawing a logical conclusion 做出邏輯推斷)
You must be hungry after your long walk. 你走了那麼長的路, 一定餓了吧.
She must be having a lot of problems with the language. 她在語言上一定有很多困難.
You must be Mr Smith I was told to expect you. 你準(zhǔn)是史密斯先生吧--我是吩咐來接你的.
They must be twins. 他們一定是雙胞胎.
He must have known (ie Surely he knew) what she wanted. 他當(dāng)時肯定知道她需要什麼.
We must have read the same report. 咱們看的一定是同一份報道. =>Usage 3 見所附用法第3項.
3 (indicating insistence 表示堅持)
You `must put your name down for the team. 你必須報名參加該隊.
You simply `must read this book it's so funny. 你一定得看看這本書--太有趣了.
`Must you make so much noise? 你就非得弄出這麼大聲嗎? must, n (infml 口) thing that must be done, seen, heard, etc 必須做、 看、 聽等的事
His new novel is a must for all lovers of crime fiction. 他的新小說是罪案小說愛好者必須一讀的. must, NOTE ON USAGE 用法:
1 OBLIGATION (must, need1,2, have to, ought to, should1) 義務(wù)或責(zé)任（must、 need1, 2、 have to、 ought to、 should）
(a) Must is used to show that the speaker orders or expects something to be done *must用以表示說話者命令或期待做成某事
The children must be back by 4 o'clock. 孩子必須4點鐘以前回來.
I must go now, ie I feel obliged to go. 我現(xiàn)在得走了, 即我覺得有此必要. Need to (informal have to) is used when somebody else is giving orders or controlling events *need to（通俗用詞為have to）用於他人發(fā)出指令或操縱的情況下
You need to/have to pass a special exam to get into the school. 你要上那所學(xué)校得通過一次特別的考試.
I have to go now, ie something (or somebody else) requires it. 我現(xiàn)在得走了, 即某事或某人要求我如此. Ought to and should indicate that the speaker is giving an order, but suggest that he or she is not sure it will be obeyed *ought to和should表示說話者發(fā)出指令, 但暗含對方是否聽從并無把握之意
She really ought to/should be leaving now. 她現(xiàn)在可真該走了.
You ought to/should apologize (though I'm not sure you will). 你應(yīng)該道歉（雖然我不知道你是否這樣做）.
(b) Mustn't (and oughtn't to, shouldn't) are used when the speaker wants somebody not to do something*mustn't（和oughtn't to、 shouldn't）用於說話者要某人不做某事
You mustn't leave the gate open. 你不要敞著大門.
You oughtn't to/shouldn't neglect the garden. 你不要不管花園. Needn't and don't have to mean that there is a lack of obligation to do something *needn' t和don' t have to意指沒有做某事的義務(wù)或責(zé)任
You needn't/don't have to arrive early. (Cf You mustn't arrive early.) 你不必早來. （參看
你不要早來.）
(c) In indirect commands, had to replaces mu...