Gerund and infinitive

Infinitive without -to is used

after modal verbs: we shall go home, we must do something, we will se…
after to do: we don't sing…
after make, let: let him come, they made me tell the truth… BUT (in the passive) I was made to tell the truth.
jutimininiai veiksmažodžiai (kai veiksmas pasibaigęs) I saw You sing (aš mačiau tave dainuojant).
after I had rather/better.

as a noun: I like travelling…
after words love, like, enjoy, prefer, dislike, hate to express preference: I hate doing sth…
after spend, waste, lose (money, time, etc.) He spent 100000$ building his house…
after expressions can't stand, have trouble, it's worth, etc.: it's worth seeing that film…
after to look forward, in addition to, etc.: I look forward to hearing from you soon…
jutimininiai veiksmažodžiai (kai veiksmas nepasibaigęs arba neapibrėžtos pabaigos) I saw You singing (aš pastebėjau tave dainuojant).