0 used with another verb to express need -- phải
We must go to the shops to get milk.
1 used, usually with another verb, to suggest a probability -- cần
2 used, usually with another verb, to express duty, an order, rule etc -- cần thiết
3 something necessary, essential, or not to be missed -- chắc hẳn
If they have not got any amusements up in their backwoods, we mustn't have none.
Many of our participants clearly felt that they ' mustn't complain ', which may be an adaptive psychological strategy for coping with the vicissitudes of advancing age.
There must be an increased availability and access to drug treatment that is sensitive to pregnant and post-partum women in an urban society.
The stretching of these variables is restricted, however, by the condition that both terms in the equation of continuitymust remain of the same order of magnitude.
One mustn't think it's a miracle.
You mustn't reinforce the role with 'gimmicks'.
What you mustn't do is waver, say in the same breath that he both can and can't, and then claim that this contradiction proves that time travel is impossible.
Just because there are dark fogs which our sun hasn't yet penetrated we mustn't let the sun lose its glare.