江苏省徐州市王杰中学高一英语必修二 unit1 Grammar and usage 学案Learning aims:1. Learn how to form and use the present perfect tense.2. Understand when the present perfect continuous tense is used in sentences.Difficult &important points:Learn to use the two tenses correctly一．Step 1 Lead-in1. Go over the news story on Page 2 and find the sentences using the present perfect tense.1.2.3.4.5.6.2. Please explain why the tense is used in these sentences.Step 2 Points 1-6 1. Justin _______________(disappear), so Kelly is very sad.2. I_________________(not see)Justin since last Friday night.3. We ____________ (study) English for about five years.4. They __________ (live) in the south since their daughter was born.5. I __________ (read) your article three times. It’s well written.6. Eric _____ just _____ (go) back to his hometown.7. The student ______________ (finish) her homework already.8. I ___________________(not hear) anything from him yet.9.This/It is the first/second time(that) he __________(see) the film.10.In the past five years great changes _____________(take ) place in my hometown.Step 3.Practice Read the diary entry and then complete it using the correct forms of the verbs in brackets.Step 4.Present perfect continuous tense The form : Revise the sentence: 回家之后我一直睡不好觉。译：Example: Kelly: Sorry I’m late. Have you been waiting long? Mavis: Yes. I’ve been waiting for an hour.Step 5.Pratice1.The man started working in the field half an hour ago. He is still working now.The man _________________ (work) in the field for half an hour.2. I am really tired. I______________(paint) the living room all day and still need one more hour.3.Lucy ___________ (consider) going back to his company since days ago but...
