What are the two modal verbs we use to express obligation?
must / have to
must / mustn't
must / should
can / mustn't
Choose the correct modal verb for prohibition
can't
shouldn't
mustn't
don't have to
We generally use it when we talk about no obligation
have to
should
must
don't have to
Which modal verb is used for advice or recommendation?
might
must
need to
should
In modal verbs which is NOT a form of advice in AFFIRMATIVE?
shouldn't
should
must
have to
Which is a similar idea of You need to remember to do your HW every day
You must remember to do your HW
You have remember to do your HW
You can remember to do your HW
You should remember to do your HW
Which sentence expresses the same idea of It is obligatory to wear a uniform every day
You mustn't wear a uniform every day
You have to wear a uniform every day
You can wear a uniform every day
You don't have to wear a uniform every day
Which sentence has the same idea of It is prohibited to chew gum in the laboratory
You must chew gum in the laboratory
You don't have to chew gum in the laboratory
You have to chew gum in the laboratory
You mustn't chew gum in the laboratory
What is the correct form to say advice or recommendation in NEGATIVE?
don't have to
should
shouldn't
must not
Which sentence describes the same idea of: It isn't necessary for students to wear the uniform
Students mustn't wear the uniform
Students don't have to wear the uniform
Students should't wear the uniform
Students must wear the uniform
You _____ use the my phone without my permission.
don't have to
mustn't
should
must
