Look at these sentences:
‘My children love TO PLAY outdoor games.’
‘Saurav, how many times I have told you TO COMPLETE your home work?’
You will have heard or seen sentences like these many times and must have wondered why the verbs (in theses examples COMPLETE and PLAY) are preceded by TO. PLAY and COMPLETE are base verbs and when TO is added to the base verb, TO PLAY and TO COMPLETE become infinitives. Infinitives are one kind of non-finite verbs, the others being gerunds and participles.