【正文】
。 3完成教師布置的相關(guān)練習(xí)。re at school. What school rules do we have? What must we do? What mustn’t we do? ?We must wear school uniforms. ?We must get to school on time. ?We must keep quiet in the school library. ? We mustn’t throw rubbish on the ground. ? We mustn’t pick the flowers in the garden. We use must when the speaker feels that something is necessary. We use must not to say that something is not allowed. If you’re ill and the doctor asks you to stay at home, what’ll you have to do? Do you have to go to school at weekends? No, we don’t have to. We use have to when the situation makes something necessary. We use do not have to to say that it’s