An infinitive is the ‘to’ form of a verb, for example to play, to watch, to be. In Spanish infinitives end in ar, er or ir. Use the infinitive to give opinions, after modal verbs, and with certain ...

One major word-formation process in English is to use the noun itself as a verb to express the action conveyed or implied by the noun, without changing the form of the noun in any way.

Over the years, I’ve learned a lot about English grammar and usage — most of which I promptly forgot. And not for lack of use. Every day I apply what I’ve learned to catch and fix writers’ mistakes.