Present Tense		Past Tense
Person	Singular	Plural	Singular	Plural
1st	I am	we are	I was	we were
2nd	you are	you are	you were	you were
3rd	he/she/it is	they are	he she/it was	they were

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The Verb To Be

Notice that the verb To Be has 3 forms in the present tense ( 2 as sigular and 1 as plural ). In the past tense, it has 2 forms only, one as singular and the other one as plural.