1、单元语法小专题(Grammar Focus)语法精讲suppose的用法小结suppose作动词，其意思是“猜想；设想；认为；假设”，其常见用法如下：1be 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。如：He is supposed to arrive on time.他应该准时到达。You are supposed to ask the teacher if you want to leave the classroom.如果你想离开教室，你应
2、该问问老师。You are supposed to shake hands.你应该去握手。2在口语中，常用否定结构be not supposed to do sth.，意为“不被允许做某事；不应该做某事”，相当于shouldnt。如：You are not supposed to smoke on the bus.(You shouldnt smoke on the bus.)你不应该在公共汽车上吸烟。We are not supposed to play football in the street.我们不应该在街上踢足球。3be supposed to have done sth.意为“本
3、应该做某事而没有做”。如：You are supposed to have handed in your homework.你本应该把作业交上来了。4“supposedthat从句”变为否定句时，否定词应该前移。类似的词还有think，believe等。如：I dont suppose he will tell you about it.我认为 他不会告诉你这件事。I dont think he will come.我想他不会来了。5如果表达“过去某时应该(不应该)做”时，用 was(wasnt)/were(werent) supposed to，相当于“should(shouldnt) ha
4、ve动词的过去分词”。如：I was supposed to arrive at 7：00，but I arrived at 8：00.我应该七点钟到，却八点钟才到。语法精练.用What are you supposed to do，I was supposed to或Youre supposed to填空。1. What_are_you_supposed_to_do when you are late for school?2. Youre_supposed_to wash your hands before a meal.3. What_are_you_supposed_to_do whe
5、n you are invited for a Chinese dinner?4. I_was_supposed_to bow when I met someone for the first time in Korea.5. What_are_you_supposed_to_do when you have a bowl of rice in China?.用suppose的适当形式填空。6I suppose that she is not yet thirty years old.7You were supposed to be here at 2：00.I have been waiti
6、ng for you for almost an hour!8I suppose that my father will be back in half an hour.9You are not supposed to trouble her again.10Is it going to rain this afternoon?Yes，I suppose so.按要求完成下列句子，每空一词。11She should arrive here at 7：00.(改为同义句)She is supposed to arrive here at 7：00.12You are supposed to he
7、lp him out.(改为否定句)You are not supposed to help him out.13I suppose he will be back in an hour.(改为否定句)I dont suppose he will be back in an hour.14Students are supposed to greet_the_teacher when classes begin in China.(对画线部分提问) What are students supposed to do when classes begin in China?15They are su
8、pposed to invite Mike to the birthday party next_Sunday(对画线部分提问) When are they supposed to invite Mike to the birthday party?.根据汉语意思完成句子，每空一词。16你不应该在这里打电话。You are not supposed to make a call here.17在中国，人们第一次见面时应该握手。In China，people are supposed to shake hands when they meet for the first time.18他应该一个小时前就到那儿了。He is supposed to have got there an hour ago.19人们不可以在这儿抽烟。People are not supposed to smoke here.
