1.本课的核心句是Everyone is asleep. Everybody is asleep. Everything is untidy. I looked for my pen everywhere. Is there anyone at home? Is there anybody at home?
2.本课的核心句是Is there anything in that box? I couldn't find my pen anywhere. There's no one at home. There's no body at home. There's nothing in this box.
3.本课的核心句是Where did you go yesterday? Nowwhere. I staved at home. There's someone in the garden. There's somebody in the garden.