Modal Auxiliaries

Auxiliaries verbs sometimes called modal auxiliaries. they are helping verbs that express a wide range of meanings (ability, permission, necesity,etc). most of the modals have more than one meaning. they are folowed by the simply form of a verb, they are followed by to, the main verb never has final -s.

1. Can,could, must, shall, should, will, would, may, might, had better. the functions of the are :Can and could express  ability ,ex : My father can play badminton well ; can express permission, ex : You can have a cookie after dinner ; could express posibilit, ex : I don't know why Aziz is not class. ; must express necessty or obligation, ex : Beri has an important test tomorrow. must express conclusion, ex : Riri has worked hard since in the morning. she must be thirsty. must not express prohibition, ex : Children you must not play with matches.
2. Review : Be, am, is are were, was ; have, has, had ;do, does, did ; shall, should ; will, would ; can,could, must, have to.