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Infinitives (with and without to) after verbs and adjectives
Gerunds (-ing form) after verbs and prepositions
Gerunds as subjects and objects

infinitive vs gerund
explanation and exercises
list of verbs followed by infinitive
list of verbs followed by gerund

Verbs

https://www.englisch-hilfen.de/en/grammar/tenses_table.pdf

Used to versus get/be used to

https://learnenglish.britishcouncil.org/en/quick-grammar/used-infinitive-and-beget-used