The modal verbs.

http://www.elearnenglishlanguage.com/

Modals verbs are a class of auxiliary verbs. Modal verbs are also called modal auxiliaries or simply modal verbs. There are ten English modal verbs:

Could / dog
May / Might
Shall / Should
Would / will
Must / ought to

These verbs express the mode of a verb: the ability, possibility, necessity or another condition of the main verb.
These verbs are used with main verbs to make statements or ask questions. Modal verbs haven0t got conjugations or time and can't be used without the main verb.
We learned all modal verbs, their uses and their order. Also we learned the time when used, in which places are most often used (U.S.A or UK) and also what they mean some modal verbs.

The page is very complete in content. It has a simple design that makes it simple and easy to read. Contains all modal verbs and their uses, and has done much to understand.

Alfonso Torrelo and Andrea Pinto.