English Modal Verbs: Ability vs Permission vs Habit
Medium-level quiz on choosing correct modal or auxiliary forms (can, can't, don't, am not) in everyday sentence contexts.
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Quiz Questions & Answers
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Question 1: I’m busy on Friday, so I ________ come.
can't
not can
am not
don't
Question 2: Which choice best explains why 'can't' fits here instead of 'don't'?
It removes the subject pronoun need.
It turns the sentence into a question.
It makes the sentence past tense.
It shows a single-event inability rather than a habitual fact.
Question 3: Choose the sentence that uses a modal correctly to refuse politely.
Am not coming Friday, sorry.
I don't make it on Friday, sorry.
I'm sorry, I can't make it on Friday.
Not can come Friday, sorry.
Question 4: If you wanted to offer an alternative instead of simply saying 'can't', which phrase is most natural?
Am not coming Friday, we reschedule?
I can't come on Friday, but I could meet on Saturday.
Not can, try another day.
I don't come on Friday, maybe later.
Question 5: Which sentence demonstrates correct use of 'am not'?
I am not come on Friday.
I am not available on Friday.
Am not able to Friday.
I am not can on Friday.
Question 6: Which explanation best debunks the myth that 'not can' is acceptable in formal English?
Not can appears in Shakespearean English, so it's acceptable now.
Not can is used in legal writing only.
Standard English negates modals by contracting them (can't) or using not after the modal, not by 'not can'.
Not can is a dialect of modern British English.
Question 7: In which context is 'don't' the best choice instead of 'can't'?
To express future inability for one specific day.
To negate a modal verb directly.
When forming polite refusals in present perfect tense.
When describing a repeated habit: 'I don't work on Fridays.'
Question 8: Which rewrite keeps the same meaning but uses formal negative modal instead of contraction?
I do not can come on Friday.
I am not can to come Friday.
I cannot come on Friday.
I don't able to come on Friday.