七年级下Unit12 Dont eat in class.Section A课件.pptVIP

Guess.(猜一猜) What do you say to them? What does it mean(意思）？ Don’t take photos. What does it mean（意思）？ Don’t turn left. What do you say to them? 情态动词can的用法 1.表示能力（如体力和脑力方面），意为 “能；会”等(在第一册已经学过)。例如： Can you speak English? 你会讲英语吗？ I can dance and sing. 2. 表示请求或允许，多用在口语中，意为“可以；能”等。(在这课中新学的词义)例如： Can I help you? 我能帮助你吗？ We can eat outside. 用于否定句表示不允许。例如： You can’t play basketball. 你不能玩篮球 What are the rules? We can’t run in the hallways. What are the rules? We can’t eat in the classrooms. What are the rules? We can’t listen to music in the classrooms. What are the rules? We can’t fight. 2c Pairwork A: Can we listen to music, Alex? B: We can’t listen to music in the hallways, but we can listen to it outside. Summary 重点句型： Don’t eat in class! -Can we wear hats in class? - No, we can’t. -Can we eat in shool? -We can’t eat in the classrooms,but we can eat in the dining room. … 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： We?have?to?wear?sneakers?for?gym?class. 在体育课上, 我们必须穿运动鞋。 Tom?has?to?practice?the?guitar?every? day. 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 (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) 疑问句: Do?(Does或Did) ＋主语＋have?to?＋动词原形＋其他如： Yes,?I?do.?/?No,?I?don’t.? 是的, 我必须。/不, 我不必。 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？ 1.Mr Green smoke here, because there’s a sign on the wall. It says “No smoking.” 2.It’s very hot outside. You wear a hat. 3.We eat in the classroom, because it’s impolite to teachers. 4.I go to bed after 11