must
modal verb
ukstrong/mʌst/weak/məst/weak/məs/usstrong/mʌst/weak/məst/weak/məs/mustmodal verb(NECESSARY)
A2
used to show that it isnecessaryor veryimportantthat somethinghappensin thepresentorfuture:
必须Meat must becookedthoroughly.肉必须完全煮熟。
I must get somesleep.我必须睡会儿觉了。
You mustn't show thisletterto anyoneelse.你不许把这封信给其他人看。
Luggage must not beleftunattended(= it is against therules).行李不能无人看管。
formalMust youleavesosoon?你非得走这么早吗？
formal"Must Isignthis?" "Yes, you must."“我必须在这上面签字吗？”“是的，必须。”
necessary
- necessaryDo you have the necessary skills for the job?
- needDoes she have the skills needed for work of that sort?
- requireWill you require a wake-up call in the morning?
- mustThe meat must be cooked thoroughly.
- essentialClean water is essential for a society's health.
- fundamentalSome understanding of grammar is fundamental to learning a language.
If you say that you must do something, youmeanthat youstronglyintendto do something in thefuture:
一定要，坚持要I mustphonemysister.我一定要给我妹妹打个电话。
We must get someone tofixthatwheel.我们一定要找人修修那个轮子。
UKI mustn'tbitemynails.我一定不咬指甲了。
used foremphasis:
（表示强调）必须Imustsay, youlookabsolutelygreat.我得说，你看上去好极了。
Imustadmit, I wasn'tlookingforwardto it.我必须承认，我并不是很期待这件事情。
B1
If youtellsomeoneelsethat they must do somethingpleasant, you areemphasizingthat youthinkit is a goodideato do that:
务必，一定要You must come andstaywith us oneweekend.你一定要来和我们一起度周末。
We mustmeetforlunchsoon.我们一定要快快找个日子相约吃个午饭。
- I must do someironingtonight.
- Food must beheatedto a hightemperaturetokillharmfulbacteria.
- You must give thebanka writtennotificationif youwishtocloseyouraccount.
- Soldiers mustobeyorders.
- Candidates mustanswertwoquestionsfrom eachpaper.
Essential or necessary
- basically
- basis
- be a question ofdoing somethingidiom
- box ticking
- business-critical
- dependence
- elemental
- if need beidiom
- if/when push comes to shoveidiom
- incumbent
- indispensable
- inhere insomething
- necessitate
- necessity
- need
- needed
- needful
- owe
- symbiotic
- symbiotically
You can also find related words, phrases, and synonyms in the topics:
Planning, expecting and arranging
Linguistics: very & extreme
Encouraging and urging on
mustmodal verb(PROBABLY)
B2
used to show that something is verylikely,probable, orcertainto betrue:
想必；一定Harry's beendrivingallday- he must betired.哈里开了一天车，他一定累了。
There's nofoodleft- we must haveeatenit all.没剩什么食物了，想必我们全吃光了。
When you gotlostin theforestyou must have been veryfrightened.那天你在森林里迷路了，一定很害怕吧。
"You mustknowFrank." "No, I don't."“你一定认识弗兰克。”“不，我不认识。”
- There must be aphonedirectoryin theofficesomewhere.
- There'swateron thefloor- we must have aleak.
- Try toimaginewhatlifemust have been like for Neolithic man 10,000yearsago.
- Thelettermust have goneastrayin thepost.
- Why am I underarrest? There must be somemistake.
Concluding and deducing
- analysis
- deduce
- deducible
- deductive
- diagnosis
- draw
- drawn
- imputesomethingtosomeone
- in the last/final analysisidiom
- inconclusively
- induction
- inductive
- inductively
- non-deductive
- put
- putsomethingdown tosomething
- put two and two together and make fiveidiom
- put two and two togetheridiom
- reason
- syllogism
Grammar
Must
Must comes first in the verb phrase (after the subject and before another verb):…Must: forms
Must comes first in the verb phrase (after the subject and before another verb):…Must: uses
When we think carefully about facts, we often use must to express deductions and conclusions from these:…Mustandhave(got)to?
We usually use must to talk about obligations which come from the speaker and we generally use have (got) to when we refer to obligations that come from outside the speaker.…Must: typical errors
We don’t use must to express obligation and necessity in the past. We use had to instead:…must
noun[C]
informalukstrong/mʌst/weak/məst/weak/məs/usstrong/mʌst/weak/məst/weak/məs/something that isnecessary:
必不可少的事物If youlivein thecountryacarisamust.如果你住在乡下，汽车是必不可少的。
necessary
- necessaryDo you have the necessary skills for the job?
- needDoes she have the skills needed for work of that sort?
- requireWill you require a wake-up call in the morning?
- mustThe meat must be cooked thoroughly.
- essentialClean water is essential for a society's health.
- fundamentalSome understanding of grammar is fundamental to learning a language.
Important and essential things
- -based
- amenity
- bare
- be-all
- big league
- focal point
- foreground
- fulcrum
- fundament
- grandaddy
- heavyweight
- hot button
- imperative
- name
- need
- nexus
- nub
- the grandaddy ofsomethingidiom
- the name of the gameidiom
- you can't make bricks without strawidiom