4、avetogototheChildren’sPalacetolearnthepiano.然后(稍后)我必须去少年宫学钢琴。3. Notalking!不许讲话!*4.You’relucky!你好幸运啊! 三、教材解析:1. 情态动词have to 的用法,意思是"必须、不得不",它侧重于客观上的必要和外界的权威。(1)结构:主语+have to+动词原形+其他(一般现在时,主语是第三人称单数时,用has to;句子是过去时,用had to.)如:Tom has to practice the guitar every day
5、. 汤姆每天必须练习弹吉它。I had to get up at 5:00 am last Monday. 上周一,我不得不早上5点起床。(2)否定形式:主语+don't have to+动词原形+其他 “不必”(一般现在时,主语是第三人称单数时,用doesn't have to. 句子是过去时,用didn't have to)如:Nick doesn't have to wear a uniform. 尼克不必穿制服。We didn't have to do our homework at once. 我们不必马上完成作业。(3)
6、疑问句:Do (Does或Did)+主语+have to +动词原形+其他如:Do you have to stay at home on weekends? 周末你必须呆在家里吗?Yes, I do. / No, I don't. Did he have to go to bed by 11:00 last night? 昨晚,他不得不11点前上床睡觉吗? 2. 情态动词can的用法(1)表示能力,"会""能"Can you play the guitar? I can dance and sing. 我能唱歌又能跳舞。(2)
7、表示允许、许可,"可以"、"能"Can the students run in the hallways? 学生们可以在走廊上跑吗? We can eat outside. 我们可以在外面吃东西。Can I come in? 我能进来吗?注意 :can 和have to 的区别,can没有人称和数的变化。 3. hear,listen和sound都有"听"的意思,但三者是有区别的。(1)hear"听说",侧重于"听"的内容 I'm sorry to hear that you are ill. 听说你生病了,我很难过。 ★he
8、arsb.do/doing sth听见某人做某事(2)listen"听"侧重于"听"这一动作。Listen to me carefully. 认真听我说。(3)sound"听起来",它是系动词,后面接形容词等。That sounds