I sometimes see sentences like "All you have to is ask a question." This is the usage I've never learned. If it goes like "All you have to is to ask a question," that'll make sense to me. Will anyone please explain what kind of grammar is being used here?
Thank you in advance,
Top answer
You need the dummy verb 'do' if another verb is not used. All I want to do is stay home tonight. All I want to eat is pizza tonight.
— Mister Micawber
You need the dummy verb 'do' if another verb is not used.
All I want to do is stay home tonight.
All I want to eat is pizza tonight.
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