I have not been able to find an explanation for this use of an infinitive without to:

The first thing I do in the morning is go to the bathroom.

The first thing I do in the morning is open my eyes.

The first thing I do in the morning is turn off the alarm clock.

Infinitives without to are used in the following cases:

-After modal auxiliary verbs (We can managed it)

-After do (I do admit I was wrong)

-After certain verbs like let, make, see... (They made me wait)

-After rather, better and had better (I would rather go alone)

-After and, or, except, but, than, as and like (It is as easy to smile as frown)

-After why (Why pay more at other shops?)

[ http://www.perfectyourenglish.com/grammar/infinitives-without-to.htm ]

I have found no mention of using an infinite without to after the verb to be. Are the examples above a special case? Are they very colloquial? Or are they incorrect?

  • 2
    It's not a matter of "after the verb 'to be'". It's a construction and not a simple sentence. Commented Dec 17, 2013 at 18:02

3 Answers 3


In this case actually infinitive with and without "to" is possible (and I was surprised that "to" is possible here, as it sounds quite uncommon to me).

From bbc.co.uk:

There are one or two other structures where to-infinitive and the bare infinitive are both possible. Expressions with do or did, such as what I've done or all I did can follow either pattern.

I hate shopping so what I've done is (to) order a new computer over the Internet.

All I did was (to) suggest that she should lend him no more money. I didn't insist on it.

The examples you gave are not incorrect in any way, and such structures are commonly used.


The infinitive without to is called the bare infinitive in English. The places where one can use the bare infinitive in English are a multitude, far too many to list exhaustively, but you've listed many of the major ones above. None of your examples are incorrect. Rather, they're all perfectly grammatical and natural statements, acceptable in both colloquial and formal communication.

  • 1
    Oh please! "None of your examples is incorrect." Or (better) "All of your examples are correct".
    – Thruston
    Commented Dec 17, 2013 at 17:37
  • 3
    I'm sorry, but your correction does not sound legit to me :)
    – Vilmar
    Commented Dec 17, 2013 at 17:39
  • 2
    @Thruston, what Vilmar said. Commented Dec 17, 2013 at 17:43
  • @Susan, that's cool from the OED. And I know it's a bit of a shibboleth but this is English Language & Usage and I am an old fashioned stickler :-) In spoken English, I'm quite happy with people using a plural verb after "none of [some plural]" but in written English it sticks out like a sore thumb (at least to me), and, as I suggested, it's often better to rewrite it in the positive so that the difficulty disappears.
    – Thruston
    Commented Dec 17, 2013 at 18:00
  • 2
    @Thruston: What about from one of the co-authors of 'the most authoritative work on English Grammar', the CGEL? Professor G Pullum writes: The literature I looked at says only plural agreement occurs. I conclude that on the basis of this evidence we should assume that it is plural agreement on the verb that correctly matches a subject like 'none of us'. (You may assume instead that Oscar Wilde didn't know basic English grammar. It's a free country, you can voice that unsupported opinion if you want.) Commented Dec 17, 2013 at 19:44

Would you say this?

This is the first thing I do in the morning. To go to the bathroom.

This is the first thing I do in the morning: to go to the bathroom.

I wouldn't.

If anything, it's the fact that the sentence

The first thing I do in the morning is to go to the bathroom.

(see Vilmar's answer) is acceptable that might need the explanation.

If you want the best rule of English grammar:

Don't accept every grammatical rule you find in a book of grammar without a lot of careful consideration.

And a few close contenders:

Every rule has exceptions. If one seems not to have any, it's because nobody has thought of one yet.

You'll probably find another rule in another book of grammar that contradicts the one you're looking at.

Nobody has yet written the perfect grammar.

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