The infinitive with to is used:
1. after certain verbs (e.g. )
e.g.
2. after certain verbs + question words
e.g.
3. after (the first, the best, the only)
e.g.
4. after want, would like, expect, ask, tell +
e.g.
With the infinitive with to you often express:
1. and (e.g. with want, would like, hope, decide, expect, offer, promise,…)
2. (e.g. I‘d prefer to stay home tonight)
3. efforts or attempts (e.g. try, learn, manage)
https://www.tutory.de/entdecken/dokument/grammar-sheet-infinitive-with-to
In some cases the infinitive is used without to. This happens:
1. after modal verbs (can, should, must, have to)
e.g. They should trust her.
2. after let/make + object
e.g. They should let her go out with her friends.
meet up | take | do | calm down
1. They don‘t let me anything!
2. They should and relax - but it might a while.
3. I hope we can soon.
https://www.tutory.de/entdecken/dokument/grammar-sheet-infinitive-with-to


