Unit 12 Section A 2公开课.pptVIP

情态动词have?to?的用法 have to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. Tom?had?to?practice?the?guitar?yesterday.? 3 疑问句: Do Does或Did ＋主语＋have?to?＋动词原形＋其他 如: I have?to?stay?at?home?on?weekends? --Do?you?have?to?stay?at?home?on?weekends --Yes,?I?do.?/?No,?I?dont. 周末你必须呆在家里吗？ 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点前睡觉休息吗？? - Can we eat in school? - We can eat in the dining hall, but we can’t eat in the classrooms. Do you have to wear a uniform at school? Yes, we do./ No, we don’t. What else do you have to do? We have to clean the classroom. 知识点解读 1.本单元重点学习祈使句。祈使句表示请求、命令、建议等。谓语动词一律用原形。 如：Open the door. 打开门。 祈使句的否定形式: “Don’t + 动词原形” 或 “Never + 动词原形”。 如：Don’t arrive late for class.（同义句：Don’t be late for class.） 例: 1 .Please ______ ______ ___ your bag. 请照看好您的包。 2 . _____________ _________ the book here. 不要把书放在这儿。 导学案45页 take care of Don’t put 2.arrive 意为 “到达”，作不及物动词。 arrive in 后接大地方 如国家，城市 ；arrive at 后接小地方 如村庄 。 例: 1 . We _____________ ___________ Baiyun Airport five minutes ago. 我们五分钟前到达了白云机场。 2 . I _____________ ___________ _____________ London by plane tomorrow. 我将于明天坐飞机抵达伦敦。 arrive at will arrive in 导学案45页 3. rule为可数名词，意为 “规则”。 相关短语有：school rules 校规，class rules 班规，family rules 家规，dining rules 就餐规则，library rules 图书馆规则。常用搭配有：keep/obey the rules 遵守规则；break the rules 打破规则； be against the rules 违反规则 例:1 . Mike is a good boy and he always ________ _________ _________. 迈克是个好孩子，他总是遵守规则。 2 . The policeman punished Peter because he was __________ _________ _________ . 警察惩罚彼得是因为他违反了规则。 3 . You shouldn’t _________ _________ _________ . 你不应该破坏规则。 keeps/obeys the rules against the rules break / be against the rules 导学案46页 随堂检测 一、根据首字母或中文意思完成单词。 1. The students are listening to the teacher carefully in the c____________ . 2. Supper is ready. Don’t stay o___________ for long. 3. You must keep the r_________ a