卜芽Unit7Howlonghaveyoubeencollectingshells2.doc

Unit7 How long have you been collecting shells?第二课时（3a-2c）【学习目标】Talk about how long you have been doing things谈论你做某事有多长时间了Present perfect progressive tense现在完成进行时【学习重难点】The different between Present perfect progressive tense and Present perfect tense现在完成进行时与现在完成时的区别【课前预习】Step Ask a pair of students to say their conversation.S1:How long has Victor been skating?S2:Hes been skating for five hours.S1:How long did Celia skate?S2:She skated for two hours.T:Very good. Thank you.Step Show the new words on the screen. Read the new words to the class and ask them to repeat.Make sure every student can understand the meanings of the new words. since conj. 自以后；自从 pair n. 一双；一对；一副 a pair of 一双；一对；一副Step 2aThis activity gives students practice in understanding the target language in spoken conversation.I.改正下列句子错误之处，每句有一处。1. He is talking for your mother. ( )2. Tom was the first one come to the classroom today. ( )3. He went shopping two days before. ( )4. Which sport do you play? ( )5. He has been learning skating for three and half years. ( )【展示交流】I.补全对话。A: Hi, Sam. What sport _?B: Skating.A:_ to skate?B: When I was five.A: So _?B: Two and a half years.A: _ every day?B: Yes, I do.A: When did you get your first pair of skates?B: _ on my birthday from my mother.【合作探究】1) Id like to collect stamps because they are interesting(1)would like to do表示“想要做某事”。Would you like to come to join my birthday party?(2)collect意为“收集，搜集”，常用作及物动词，后跟名词或代词作宾语。I like collecting all kinds Of Chinese stamps very much2)Thanks for sending me the snow globe of the monster(1)thanks for相当于thank you for意为“为感谢你”，后多跟名词短语或动名词。Thanks for your last letter. 谢谢你的上封来信。(2)send sb. sth.=send sth. to sb. 表示“送给某人某物”He sent me a present for my birthday.He sent a present to me for my birthday我过生日他送了我一件礼物。3)By the way，whats your hobby? 顺便提一下，你的个人爱好是什么?by the way在句中作插入语。介词短语by the way意思是“且说，顺便提一下，还有”，常用来介绍一般性的话题，或在脑子里突然想起的事情。By the way，have you seen her lately? 顺便问一下，你近来见过她吗?【达标拓展】Ago和before都表示以前，他们有什么区别吗？解答：ago指从现在算起“以前”，常与一般过去时连用，before指从过去某时起“以前”，常与完成时连用。例如：It happened two days ago.I have seen you before, but I cant remember where.They have seen that TV play long before.【当堂检测】I.单项选择。( ) 1. I collect shells _ they are beautiful. A. when B. because C. what( ) 2. Hes been collecting shells _ he was five years old. A. for B. since C. of( ) 3. How many _ have you got? A. child B children C childs( ) 4