Unit 10 第3课时 Grammar Focus－4c-【一本】2022-2023学年九年级下册英语同步PPT课件（人教版）

一本 初中同步训练 英语 九年级下册(RJ版) 第三课时 Grammar Focus-4c 六语法精讲 一本 be supposed to do sth. 1.be supposed to do sth.意为“被期望做某事；应该做某事”。to是不定式符号，后 接动词原形。be supposed to常用来表示劝告、建议，告知义务或责任等，相当于 should。 You are supposed to ask the teacher if you want to leave the classroom. 如果你想要离开教室，你应该问问老师。 2.be supposed to do sth.的否定形式是在be后加not。be not supposed to do sth.意为 “不允许做某事；不应该做某事”，相当于shouldn't。 You are not supposed to smoke on the bus. 你不应该在公共汽车上吸烟。 一本 3.be supposed to have done sth.本应该做某事而没有做。 You are supposed to have handed in your homework.你本应该交作业了。 4.was/were supposed to do sth..表示过去应该做某事而实际没有做，相当于should have done sth. I was supposed to arrive at7:O0,but I arrived at8:O0.我本该7点钟到，但我是8点 钟到的。 一本 It is+adj.+to do sth. 1.“Itis十a.十to do sth..”意为“做某事是…的”，it在此结构中为形式主语， 真正的主语是后面的动词不定式。 It is not easy to learn English well. 学好英语不容易。 2.句型“Itis+ad.十for/ofsb.十to do sth.”的具体用法为： (1)“Itis十ad.十for sb.to do sth.”中的形容词为描述事物特征的词，如difficult、 easy、hard、important、dangerous等。 It's important for us to eat plenty of fruit and vegetables. 对我们来说吃大量的水果和蔬菜是重要的。 一本 (2)“Itis十a.十ofsb.to do sth.”中的形容词是描述人物品质或性格特征的词，如 kind、good、nice、right、wrong、clever、careless、polite、foolish等。 It was foolish of him to go alone..他单独去太傻了。 一本 同步练习 !.根据句意以及汉语提示填写单词 1.(2019浙江宁波中考)Could you please show me your passporte护照)，young men? 2.The boy stopped drawing on the blackboard ()when the teacher came in. 3.Mr.Brown knocked ()at the door many times,but no one answered. 4.Summer is my favorite season ()I can go swimming with my friends. 5.This is a good book,and it is worth )reading. 一本 川.单项选择 (A)1.(2019甘肃兰州中考)We are supposed some housework with our parents when we have free time. A.to share B.sharing C.shared D.share (D)2.(2019·贵州黔南州中考)It's very important. us to make a plan before a new term begins. A.of B.with C.by D.for 本" (A)3.─Helen,you— tell the teacher if you want to go out of the classroom. —Sorry, sir. A. are supposed to B. Are surprised to C. are afraid to D. Are used to ( )4.(2021·河北唐山路北区期末)It'svery dangerousfor your kids swnmin