人教版（2019）选择性必修第三册 Unit 4 Adversity and Courage Learning About Language (2)_ Structures-学习任务单

学习任务单
课程基本信息
学科 英语 年级 高二 学期 春季
课题 The Usage of Present Perfect Continuous Tense (现在完成进行时的用法）
学习目标
通过观察、识别现在完成进行时的形式和时间状语。 通过分析语境中应用现在完成进行时的例句，归纳其表意功能。 通过比较例句，区分现在完成进行时和现在完成时的用法。
课前学习任务
预习现在完成进行时的相关句子，完成课本P41的相关练习。
课上学习任务
【学习任务一】Make sentences based on the two pictures using present perfect continuous tense. ___________________________________________________________________________. ___________________________________________________________________________.
【学习任务二】Compare four sets of sentences and try to find the different usages of present perfect continuous tense and present perfect simple tense. ① He has been writing a novel, which will be finished next month. He has written a novel, which is being prepared to come out now. 总结：_____________ 强调动作未完成 (一直)；而________________ 强调动作已经结束 (已经)。 ② I have been visiting my hometown recently, and it impresses me differently each time. I have visited my hometown recently, whose changes have left a deep impression on me. 总结：________________ 强调动作的重复，________________ 可以表示一次性动作。 ③ The repairman has been repairing the car all the afternoon. The repairman has repaired your car, and you can have it now. 总结：________________ 只强调动作行为本身，而________________ 强调动作行为的结果、影响。 ④ Where have you been We have been looking for you everywhere. We have looked for him, but haven’t found him. 总结：________________ 表示一种感彩；________________ 则陈述一种事实。 现在完成进行时与现在完成时的区别
【学习任务三】Practice Practice 1 阅读下列情境，请用现在完成进行时改写句子，并体会其功能。 1. I started to do my homework early in the morning. Now I just want to watch TV. → _________________________________________________________________________. 2. David lived in China ten years ago, and now he speaks fluent Chinese. → _________________________________________________________________________. 3. I haven’t got much sleep these days because I am worried about the upcoming exams. → _________________________________________________________________________. 4. Tom started to play piano at the age of five. And now he is a famous pianist in the world. → _________________________________________________________________________. 5. The car is shiny and clean. Father has cleaned it. → _________________________________________________________________________. 6. Someone has stolen my snacks recently. I have been lost four packs of snacks! → _________________________________________________________________________. Practice 2 结合句意，填入动词的适当形式，并说明其功能。 1. A retired engineer, 76-year-old Wilson __________________ (offer) free rides to college students for the past eight years. 2. - You are a great swimmer. - Thanks. It’s because I ___________________ (practise) a lot these days. 3. You know, I __________________ (look) for a job since my graduation, and this is my first formal interview. 4. So far this year we ___________ (see) a fall in house prices by between 5 and 10 percent. 5. He is the most creative man that I _____________ (meet). 6. He _________________ (listen) to English programs for half a year, so he ____________ (make) great progress. Practice 3 请运用现在完成进行时，描写你的网课经历，字数约50词。 ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________