The word we’re is a contraction. It combines the words we are.
We‘re going to the movies tonight.
We are going to the movies tonight.
The word were is a past tense verb.
Today we are at school.
Last night, we were at school.
Use the word we’re when you mean we are. Use the word were when you are using a past tense verb.
It’s your turn. Decide if you should use we’re or were in this sentence. Yesterday we ____shopping for a car. Did you figure out that you need a past tense verb? Good for you!