人教版英语八年级下册Unit3知识点.doc
Unit 3 Could you please clean your room? 本单元讨论的主题是“家务和许可”,其功能项目是“礼貌地请求”和“征求许可"。要求学生学会用情态动词 could来礼貌地进行请求或者征求他人的许可。1、 观察例句,总结规律Could you please take out the rubbish?Could you please make your bed and fold your clothes?规律:都含有情态动词could+动词原形。2、 情态动词could的用法(一)、表示有礼貌地提出请求。(1)Could you please ? 请你做某事可以吗? e.g. Could you please take out the rubbish? 请你把垃圾倒掉好吗? Could you please not eat in class? 课堂上你能不吃东西吗?(2)Could I please?常用于委婉地请求别人允许自己做某事,其后同样接动词原形。e.g. Could I please go camping with my friends next morning?明天早上我能和朋友们去野营吗?表示请求的问句的回答方式。(二)、could 表示请求时,其肯定回答和否定回答都不用could。肯定回答为:Yes,you can./Sure./Of course./Certainly./No problem./Id love to./Yes,please./Its OK./All right./ Yes, sure. /with pleasure. 否定回答为:Sorry,Im afraid not./Im sorry,you cant./Im sorry,but /Of course not. /Sorry, youd better not.e.g. Could you please do the dishes?请你洗洗盘子好吗? Sorry,Im afraid not. I have to do my homework. 对不起,恐怕不行,我得做作业。 Could I use your computer?我可以用你的电脑吗? Certainly.当然可以。(三) 、could 为can的过去式。意为“能”,用于表示过去的能力等,其肯定回答和否定回答都用could。具体用法如下:e.g. Could you play basketball when you were 5 years old? 当你5岁时,你会打篮球吗? Yes,I could. / No,I couldnt.是的,我会。/不,我不会。三、总结情态动词could的用法1.表示有礼貌地提出请求,意思是请你做.可以吗?还可用于委婉地请求别人允许自己做某事,意思是我可以做.吗?2.could 为can的过去式。意为“能”,用于表示过去的能力以及许可。四、总结本单元重点短语1. take out the rubbish 倒垃圾2. sweep the floor 擦地板3. make ones bed 整理床铺4. all the time 频繁;反复5. as soon as 一.就.6. in order to 目的是;为了7. depend on 依靠;信赖8. as a result 结果9. take care of 照顾;处理10. agree with 赞同;同意五、当堂检测1. -Could I borrow your camera? -_,but you cant lend it to others.A. Im sorry B. Of course C. Let me see D.No, thanks2.-Could I look at your pictures? -Yes. of course. You_. A. could B. can C. will D. might3. -Could you please help me do my homework? -Sorry,I _.You should do it by yourself.A. Could B. couldn t C. cant D. cant4. -Could you please take out the rubbish? - _. But I want to drink a cup of water first. A. Thank you B. Sure, no problemC. Youre welcome D. No, I cant