The pronouns we and they are subject pronouns. The subject pronouns do the action in the sentence.
We sang a song.
They joined the choir.
The pronouns us and them are object pronouns. The action happens to us and them.
Mom called us on the phone.
My sisters were happy when we called them.
Use the pronouns we and they as part of the subject in a sentence. Use the pronouns us and them as part of the object.
▶It’s your turn. Put the correct pronoun into each blank. Jim and I were hungry, so Mom fed ____. After dinner, ___ told her “thank you.” Did you figure it out? Good for you!