Must Vs Have to
Complete:
Students ______ wear an ID badge. (school rule)
→ have to
Complete:
You ______ park here. It’s illegal.
→ mustn’t
Complete:
I can’t come today, but I will ______ tomorrow.
→ be able to
Complete:
When I was 6, I ______ read very fast.
→ could
Complete:
You ______ have told me the truth.
→ should
Which is stronger (speaker opinion)?
A) I have to leave.
B) I must leave.
→ B
Choose the correct option:
“You ______ bring food if you don’t want to.”
→ don’t have to
Why is this incorrect?
“She will can help you.”
→ Cannot use “will can”; use “will be able to”
Complete:
Yesterday, I ______ fix the problem. (specific successful situation)
→ was able to
Correct the mistake:
“You should have went earlier.”
→ You should have gone earlier.
Correct the mistake:
I must to finish this today.
→ I must finish this today.
Correct the sentence:
“You mustn’t come to class tomorrow if you’re sick.”
→ You don’t have to come to class tomorrow if you’re sick.
Rewrite using “be able to”:
“Maybe they can solve the problem.”
→ They might be able to solve the problem.
Explain the difference between:
“I could swim when I was 5.”
“I was able to swim yesterday.”
→ General ability vs specific successful event
Make a criticism:
(Your friend didn’t study and failed.)
→ You should have studied.
Explain the difference in meaning:
I must leave now.
I have to leave now.
→ Must = speaker’s internal decision / strong authority
→ Have to = external obligation
Explain the difference:
You mustn’t use your phone.
You don’t have to use your phone.
→ Prohibition vs optional
Choose the correct sentence:
A) I will can finish later.
B) I will be able to finish later.
→ B
Correct the mistake:
“Last night I could finish the project.” (specific situation)
→ Last night I was able to finish the project.
Turn into a question:
“You should have apologized.”
→ Should I have apologized?
Rewrite using the correct modal:
“It is necessary for employees to submit the form before Friday.”
→ Employees have to submit the form before Friday.
(“must” also acceptable, but discuss nuance)
Create two sentences:
One expressing prohibition
One expressing no obligation
(Answers will vary, but structure must be correct.)
Use “be able to” correctly after a gerund or infinitive.
Example expected:
“I want to be able to travel.”
“Being able to speak English is important.”
Create:
One sentence with general past ability
One with specific past achievement
(Must show clear distinction)
Explain the meaning difference:
You should study.
You should have studied.
→ Present advice vs past regret/criticism