PAST OF THE VERB
First of all, this is the way the verb "To Be" is conjugated in the past tense.
SUBJECT + WAS / WERE + COMPLEMENTS
"He was ill yesterday"
"You were ill yesterday"
SUBJECT + WASN´T / WEREN´T + COMPLEMENTS
Look at the next negative sentences, as examples:
He wasn´t ill yesterday.
You weren´t ill yesterday.
WAS / WERE + SUBJECT + COMPLEMENTS?
Look at the next interrogative sentences, as examples:
Yes, SUBJECT + was / were
Look at the picture below for a clear understanding.
Feel free to print this exercise.