江蘇省連云港市東?？h晶都雙語學(xué)校八年級英語下冊 unit 4 a good read grammar 2課件 （新版）牛津版(文件)
【正文】 (3). We must keep quiet in the classroom.(4). We mustn’t be late for class.(5). We mustn’t throw rubbish on the ground.We use must when the speaker feels that something is necessary. We use must not=mustn’t to say that something is not allowed. you’re ill and the doctor asks you to stay at home, what’ll you have to do?? You want to go out, but it’s raining heavily, what’ll you have to do?? We use have to when the s
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