...get out of his depression and regain/regained...

[Karen123456]

He eventually managed to get out of his depression and regain/regained his cheerful and more confident self.

The above is my own sentence.

Should I use 'regain' or 'regained'?

Thanks.

 

[owlman5]

Hi, Karen.

You should use "regain" in that sentence.

 

[Fictional]

Out of curiosity, Owlman5, does the usage of "regained" makes it ungrammatical?

 

[owlman5]

It does, Fictional. "Manage" is the verb that is conjugated in that sentence. The verbs that come after "to" should be infinitives.

 

[Fictional]

Thanks, Owlman5. For similar reason we won't use "got out", right?

 

[owlman5]

You're welcome.

For a similar reason we won't use "got out", right?

That is right.

 

[Susan Y]

I don't think regain is the right verb here in combination with "self"; you don't regain yourself, you regain something.

You could say either of these:

... to regain (regained) his cheerfulness and confidence.

.. .to become (became) his cheerful and confident self again.

And as to the verb form: you could use either the infinitive or past, because the sense might be either "he managed to do x and to do y" or "he managed to do x and did y". You could argue either way.