九年级Unit10 SectionA 4a-4c Grammar focus.ppt

be supposed to的用法 be supposed to do sth相当于 should do sth 或者是be expected to do sth.人称,时态和句式体现在be的变化上，to为不定式符号后接动词原形。 句式： 1)肯定句： be supposed to do sth 2)否定句：be not supposed to do sth 相当于shouldn’t do sth. 或 be not allow to do sth.意为“不应当做某事；不被允许做某事”。 You are not supposed to play football in the classroom. 3)疑问句： be supposed to do sth 的疑问句是将be动词的相应形式提到主语前面。 Are you supposed to sleep at nine? 晚上你应该在9点睡觉吗啊？ What are you supposed to do on weekend? 在周末你应该干什么？ You’re supposed to ask the teacher if you want to leave the classroom. 如果你要离开教室，应该先问问老师。 We are not to supposed to play football on Sunday. 不准我们在星期日踢足球。 This is secret and I’m not supposed to talk about it. 这是秘密，我不应该谈论。 She is late for class again and she is supposed to say sorry to the teacher. 她又迟到了，她应该向老师说对不起。 ( )1. Everyone is supposed ________ a seat belt in the car. A. wearing B. to wear C. to be worn ( ) 2. What do you feel the chickens ________? A. on B. to C. / ( ) 3. Your mother looks a bit disappointed. You ________ have told her the truth. A. should B. must C. can ( ) 4. I find ______ difficult to remember everything, though I’m still young. A. that B. this C. it ( ) 5. You must ________ your handwriting. I can’t read your homework. A. improve B. raise C. notice ( ) 6.The box is ___ heavy ___ I can’t lift it. A. too, to B. so, that C. very, that D. too, that 1. 她应该准时到这儿。 She _____________ arrive here on time. 2. 他不应该在公共场合吸烟。 He ______________ smoke in public places. 3. 你应该5点到那里吗？ Are you __________ get there at five? 4. 你本应该早点交作业。 You are supposed to ___________ your homework earlier. Learning what you _________________ (suppose) to do and __________________ (not suppose) to do in social situations may be difficult, but it is worth the trouble if you want to understand anoth