Results 1 to 3 of 3
  1. #1
    englishquestion is offline Banned
    Join Date
    Jun 2010
    Posts
    12

    When do we use "must be"

    When do we use "must be" is it when we assume something
    eg: You must be at work,right.
    You must be having dinner

  2. #2
    TheParser is offline VIP Member
    • Member Info
      • Member Type:
      • Other
      • Native Language:
      • English
      • Home Country:
      • United States
      • Current Location:
      • United States
    Join Date
    Dec 2009
    Posts
    6,742

    Re: When do we use "must be"

    Quote Originally Posted by englishquestion View Post
    When do we use "must be" is it when we assume something
    eg: You must be at work,right.
    You must be having dinner
    ***** NOT A TEACHER *****

    Good morning, Englishquestion.

    (1) Yes, many times it means that we think something is true:

    It's 10 p.m. in New York. My grandmother must be sleeping now.

    You have been accepted as a student to the university. You must be very happy.

    (2) Sometimes it means something like "should" or "have to":

    When you enter a church, you must be quiet.

    When you see a yellow traffic light, you must be ready to stop your car.

    When you speak with a teacher, you must be respectful.

    Have a nice day!

  3. #3
    billmcd is offline Key Member
    • Member Info
      • Member Type:
      • English Teacher
      • Native Language:
      • English
      • Home Country:
      • United States
      • Current Location:
      • United States
    Join Date
    Mar 2009
    Posts
    3,485

    Re: When do we use "must be"

    Use "must be" for conclusions as in your examples or "Mary's car is not in the driveway. She must be at work" and for requirements, "You must be quiet in the library".

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •