The verb to be.

Verb to be + personal pronouns.

Let's practice the verb to be. click in the next link and do the exesices.

http://www.eclecticenglish.com/grammar/PresentSimpleToBe1A.html

Let's practice the negative form of the verb to be... click in the next link and practice.

http://www.eclecticenglish.com/grammar/PresentSimpleToBe1B.html

Let's practice the interrogative form od the verb to be... click in the next link and get fun wiith the exercises.

http://www.eclecticenglish.com/grammar/PresentSimpleToBe1C.html