Use Of Must


1.To express necessity (वर्तमान की आवश्कता व्यक्त करने के लिए )
I must go now = i have to go now
You must vacate the room by tomorrow = you will have to vacate The room by tomorrow 

2.To express a permenent ruling (स्थायी निर्णय के लिए )
We must follow the traffic rules
We must not move in the wrong side of the road

3.To express Emphatic Advice (जोरदार सलहा के लिए)
You must give up smoking
We must crush the terrorist

4.To express a sense of duty( कर्ताव्बोध व्यक्त करने के लिए)
We must respect our elders.
We must serve our country.

5.To express Strong possibillity( प्रबल सम्भावना के लिए)
There must be something wrong
There must be a mistake somewhere