Verb tenses and verb forms (infinitives and gerunds) and their names in English for the general selection test

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

https://www.sjsu.edu/writingcenter/docs/handouts/Infinitives.pdf

https://www.scribbr.com/nouns-and-pronouns/gerund/#:~:text=A%20gerund%20is%20a%20word,the%20verb%20it's%20derived%20from.

https://www.learnesl.net/past-gerund/

https://www.insegnanti-inglese.com/grammar-1/Tense-table.html

https://english.lingolia.com/en/grammar/tenses/overview