All I did was All I did is

Is - could be a more recent action but little difference really

This is a very common version:
eg.
All I did was throw my paper at the teacher. (an action in the past)

I can't think of any natural, standard English examples using the present, because "did" sets the action in the past. There may be an odd example showing the effect of a past action in the present, such as "All he did is for naught." But that sounds a bit awkward.

AnonymousAll I did was All I did is

If I were you, I would not get into the habit of saying things like "All I did is". "All I did was" makes a lot more sense.

CJ

Hi.

AlpheccaStarsAll I did was throw my paper at the teacher.

Odessa DawnTo me, whose highlighted words are not verbs. Am I correct, please?

They are infinitives, and infinitives are verbs.
Note that these non-finite verbs can have objects and adverbs.

Thanks. They are preceded by an auxiliary, but they are not inflected. Why, please?

Hi, AS.
I got it. to is unnecessary and adding -ing is incorrect. Sum it up, that is how to say it.

This is the way to parse the sentence

[All (that) I did] was [(to) throw my paper at the teacher].

Subject: All
Modifier clause: (that) I did
Verb: was
Complement: infinitive clause: (to) throw...

Here is another example:
All I want to do is pass this difficult grammar test.

[All (that) I want to do] is [ (to) pass this dif