[Ylpertnodi]

Learn your own languages' grammar.

Then learn (in all tenses) the below verbs that are (usually) followed by infinitives

Can / am able Must/ to have to To want to

Then, 'to be' and 'to have' (to go with the above).

Vocabulary...including a boatload of infinitives.

[nchmy]

i, indeed, had to learn english grammar in order to learn spanish. When they taught us french as kids in school, it was just an exercise in memorization and I had ZERO conception that the various verb tenses actually mapped onto something in english!

This book (English Grammar for Students of Spanish) was useful to me. I assume there's ones for other target languages as well

https://archive.org/details/englishgrammarfo0000spin_q0j9_05...