Unit 6 How long have you been collecting shells Section A教师或学生笔记栏学习目标：1.会读并掌握44-45单词 2.理解并能正确运用现在完成进行时。导学过程Step1知识链接单词测试1.收集_2.贝壳_3.marathon _4一对_5.滑冰鞋_6.自从_7.多长_8长达五小时_9自从九点钟_10.你的第一次比赛_Step2对话学习：1. 学法指导：默背下面对话A：How long have you been skating ? B :I have been skating since I was five years old .a.小组内合作快速课文从课本中找出上面划线的句子，并在书中划出来。b.观察下面的句子，总结句子的特点1. I have been skating for five hours.2. Ive been skating since nine oclock ,3.I have been collecting shells since I was 7 years old。4. I have been listening to music videos since I was seven years old.标志词：句子构成：含义：学以致用1 His father likes _(收集) old newspaper.2 His friend has many great _（收藏）。3 He wants to buy two _(双) of sports shoes.4He has been skating _he was ten. A. after B. before C. since D. until5. The little boy has been swimming_A. since two hours B. for 2 hours ago C. two hours ago D. for two hours c. 达标测评u1 I have been skating _ (自从) I was 7.2. _did you live in the countryside? A. How old B. How long C. How soon D. How often3. He_ five years.A. has left Beijing B. has been learning English C. has skating D. has come to shanghai4 He has been skating _he was ten. A. after B. before C. since D. until5. The little boy has been swimming_A. since two hours B. for 2 hours ago C. two hours ago D. for two hours