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

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.