1. All you have to do is ask the question.
  2. All you have to do is to ask the question.
  3. All you have to do is asking the question.

The first sentence is what I saw on the tv show and the other things I made.

I thought that the first sentence pattern was wrong before.

Do they have exactly the same meanings?


Option #1 is grammatically correct, and sounds natural to my (American) ear.

Option #2 is grammatically correct, but does not sound natural to me. It has the same meaning as Option #1. It has the same level of formality as Option #1.

Option #3 is not grammatically correct.

  • @Antonio -- Thank you for the upvote. I recommend waiting before accepting this answer, though. Waiting a day or two before accepting an answer encourages other users to post alternative answers. Those answers might be different, or might be better supported. Some users use Google n-grams to show how common or how rare various options are. Other uers might explain why Option #2 sounds less natural, or explain why Option #3 is grammatically incorrect.
    – Jasper
    Jul 29 '19 at 6:36

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