Full infinitive (to V): after adjectives (difficult, usual), to express purpose (to say why), after nouns (plan, ability, decision), after some verbs (want, decide, afford), after the first/second/last, Bare infinitive (V): after modals (can, must), after let, make and help, Gerund (Ving): as a subject/object (1st palce in a sentence), after prepositions and phrasal verbs (give up, good at), after It's no use, It's worth etc., after some verbs (love, deny, admit),

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