Используем инфинитив с to:
● would love/like/prefer.
● после прилагательных (angry, glad, happy, sorry, pleased, annoyed, etc.)
● с too или enough.
● после ряда глаголов (advise, agree, appear, decide, expect, forget, hope, manage, offer, promise, refuse, seem, want, etc.)
● после where, how, what, who, which.
● после begin, stop, start
Используем герундий (-ing form):
● после love, like, dislike, hate, enjoy, prefer.
● после start, begin, stop, finish.
● после avoid, admit, confess to, deny, look forward to, mind, object to, prefer, regret, risk, spend, suggest, eес.
● после выражений: I’m busy, it’s no use, it’s (no) good, it’s worth, that’s the use of, be used to, there’s no point (in).
● после предлогов