Mary is a student. Mary isn't a student. Is Mary a student?
Sally and Larry are playing a game. Sally and Larry aren't playing a game. Are Sally and Larry playing a game?
They sent a letter to their grandma last Sunday. They didn't send a letter to their grandma last Sunday. Did they send a letter to their grandma last Sunday?
She will go to NY next week. She won't go to NYnext week. Will she go to NY next week?
My dad has already watched this film. My dad hasn't watched this film yet. Has my dad already watched this film?
