An infinitive is to + the base form of verb. Like gerunds , infinitives act like nouns and answer the question what.
we use infinitives after certain verb , such as:
agree / continue / intend / offer / start
ask / decide / learn / plan / try
attempt / expect / like / prefer / want
begin / forget / love / promise
cant't stand / hate / need / remember
*These verbs can be followed by an object before the infinitive .