第31时How long have you been collecting shells学案
【题】：Unit 6 How long have you been collecting shells? . Section A (1a-2c)
【励志小木屋】：Good habits are the best friends of man. 良好的习惯是益友
【学习目标】：
知识目标 1.识记并会运用单词collect, shell, pair, skate, since
2.理解并运用短语 for five years, a pair of...
3. 掌握并运用句型(1) --- How long have you been skating ?
--- I have been skating for five hours.
(2) --- How long have you been skating ?
--- I have been skating since I was seven years old.
能力目标：能用新句型进行对话，了解完成时态的用法。
情感目标：培养学生们的交际能力，以及相互帮助和合作的能力。
【学习重难点】：重点：现在完成时态的构成及用法，标志词.
难点：have /has been and have/has gone 的区别.
一、自主预习
（一）预习任务
Task One 预习本单元的单词 1）个人自读，记忆本单词2）小组互相检查单词读的情况
收集_______ 贝壳________ 一双 __________溜冰鞋__________ 自从_____马拉松赛跑 ____________ 一双溜冰鞋 ____________ 在马拉松赛中 _______
Task Two：自主预习1b,2a,2b的听力
1．试译以下句子I’ve been skating for five hours.______________
I skated for four hours.________________________
2． 以上两个句子有什么区别_________________
3．拓展练习 a. 自从八点开始，我就已经滑冰了。__________________________
b. 我读过这本书._________________
c. 我收集贝壳已经两年了。_____________________________
Task Three ：how 的相关词组:
how________多少（钱） how _______多少(人) how________多远 how ________多久一次 how_______多大 how ________ 多久以后
（二）预习诊断. 从B栏中找出A栏相应的答语
A
1．How long has Alison been skating?
2．How long did Sam skate?
3．Was this your first skating marathon ?
4．Do you skate every day ?
5．When did you get your first pair of skates ?
B
A . Yes , I do.
B . No, Iskated in a marathon last year.
C . She has been skating for five hours.
D . On my tenth birthday.
E . He skated for four hours.
（三）预习反思 Do you have any questions ?
二．中实施
Step 1 预习交流------精讲点拨
1. --- How long have you been collecting shells?
--- I have been skating since I was seven years old.
(1)how long意为“多长时间”，对时间段提问，常用for+时间段或since ... 等表示一段时间的短语回答，for+时间段== since+时间段+ago 。例如：
for five years = since five years ago
(2)how long还可以对物体长度进行提问。例如：How long is the river?
2. since I was 7 years old . 自从我七岁以。
(1) Since 作conj.时，意为“自从；自……以”，用引导时间状语从句。Since从句常用过去时，主句常用完成时。
y father has taught here since he left school.
(3)作prep.时，意为“自从；自……以”，后接表示过去时间点的名词。
She has been ill since 1999.
Step2 Warming-up Step 3 Lead-in Step4 Pairwork
Step 5 拓展延伸：用所给词的适当形式填空。
run, collect, for, since, pair
1.y hobby is ________ shells.
2.om, my shoes are old. Could you buy me a new _________ ?
3.She has been playing the piano ______ she was 4 years old.
4.I’ve been studying English _____ over 5 years.
5.Was this your first _____ marathon ?
Step 6 系统总结
三、限时作业 满分 10 分 得分 ________
1. There are many beautiful s________ on the beach.
2. I have lived in Los Angeles s______ I was born.
3. She’s going to buy a p_______ of shoes.
4. The boy likes c_______ stamps.
5. --- _____ shall we start for Shanghai ? --- At eight o’clock tomorrow morning .
A.How long B. When C. How soon
6.---- ______ have you been standing here ? --- For half an hour.
A. When B. Where C. How long
7. --- ______ you ____ to the party yesterday? ----- Yes, I did.
A. Did ; go B. Have; been C. Do; go
8. There ____ a pair of shoes under the bed. A. is B. are C. were
9. _______ (滑冰) is good for health.
10. He played computer games for 3 hours.(对划线部分提问)
______ ______ ________ he play computer games?
学后反思：
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