Obligation/prohibition
Which modal verbs do we use to express obligation?
must, have to
Which modal verbs do we use to express responsibility?
Must / should
Which modal verbs do we use to give advice?
Should / Ought to / Had better
Which modal verbs do we use for requesting a permission?
Can or may
You are not allowed to enter the supermarket without a shirt on.
You ________ enter the supermarket without a shirt on.
mustn't / can't / may not
What is the opposite of "must"? (no obligation)
"Don't have to"
Complete the sentence:
You __________ help others, it's polite and nice.
should
(no obligation)
What modal verb do we use to discourage someone from something?
Shouldn't / Ought not to
Ask for permission to leave the room most formally.
"May I please leave the room?"
I want to go to the ocean tomorrow, but there is a chance of rain.
I want to go to the ocean tomorrow, but it _____ rain.
may / might
What is the difference between "must" and "have to"?
Must - formal, inner motivation
Have to - institution needs you to
Complete the sentence:
I ________ forget to pay the debt, or they block my card.
mustn't
(obligation)
Complete the sentence:
You _________ bring me the money tomorrow, or I'll rip you to pieces.
had better
Ask a person to bring you a coffee in a polite way.
Could you please bring me a coffee?
Please pass me the scissors from that table.
______ you pass me the scissors from that table?
Can / could
Right or wrong?
The assignments will have to be submitted by Friday.
Right.
Choose the correct modal verb:
To solve the case, we (must/should/can) find the right clue.
Must
(otherwise you don't find it)
Complete the sentence:
The company forms _____________ (complete) by tomorrow.
ought to be completed
Complete the sentence:
He asked politely, so he ________ leave the room early.
might
(permission in the past)
I suggest you study modal verbs before your test tomorrow.
You____ study modal verbs before your test tomorrow.
should / ought to
Change the sentence using the correct modal word:
Students are not permitted to use smartphones during exams.
Students mustn't use smartphones during exams.
Complete the following sentence:
You ___________ always be responsible, but you ________ recognize the right moment when you ______ let go.
You don't have to always be responsible, but you must recognize the right moment when you can let go.
Explain the difference between:
should / ought to / had better
should - friendly advice
ought to - formal advice
had better - informal, threatening
Complete the sentence in a formal manner:
What __________ we do about the tax issue?
What shall we do about the tax issue?
If you asked yesterday, you had the possibility to go with us.
If you asked yesterday, you could/might go with us.