1) Afirmative Sentences:

✔ We use "was" when the subject is a singular noun or the pronouns "I", "He", "She" or "It".

✔ "Were" is used when the subject is a plural noun or the pronouns "We", "You" or "They".

PRONOUN	TO BE	EXAMPLE
I	was	I was in London last month.
You	were	You were very tired
He	was	He was a teacher
She	was	She was a student
It	was	It was a sunny day
We	were	We were at home
You	were	You were on holiday
They	were	They were happy

 

Singular Noun	My aunt was from England
Plural Noun	Tom and Sarah were married