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1、Unit 6 How long have you been collecting shells?,words,collect shellmarathonpairskatesinceHilltop schoolraiseseveralskater,收集；搜集贝壳；壳马拉松赛跑；马拉式活动一对；一双溜冰鞋自从；自以来山顶学校筹集；筹募几个的；数个的溜冰者,have/has是助动词 been是be的过去分词,表示从过去开始一直持续到现在的动作，并有可能持续下去,构成形式：,have/has been+Ving,for+一段时间have/has been+doing sth+since+过去的时间点
2、since+从句(一般过去时),与过去时的比较：1.I watched TV for three hours.我看了三小时的电视（我现在没有看电视了）2.I have been watching TV for three hours.我看了三小时的电视（我现在仍然在看电视）,例句 1,我已经学了年的英语了,I have been learning English for 5 years.,例句 2,他已经集邮10年了,He has been collecting stamps for 10 years.,He has been collecting stamps since 10 years
3、ago.,He has been collecting stamps since 2002.,画线部分提问：,How long has he been collecting stamps?,for,since,表示时间的持续,for+时间段,表示“自从过去某一时间点以来”,since+过去的时间点,强调一段时间,强调动作或状态一直延续到现在,(for与since引导的短语用how long提问),从句,for,five minutesten days five years,since,May 1,2003,8:00,he was seven years old,seven years ago,
4、I started teaching English in 2010.,I am still teaching English now.,How long have you been teaching English?,I have been teaching English,for 2 years.,Teach English,2010,Have been teaching English,now,2 years,Teach English,24 years old,(Since I was 24.),sam started skating at 9 am.,He is still skat
5、ing now.,How long has he been skating?,He has been skating,for 4 hours.,skate,9 a.m,Have been skating,now 1 p.m,4 hours,skate,(since 9 oclock.),Mary started cleaning at 7a.m.,She is still cleaning now.,How long has she been cleaning?,She has been cleaning,for 30 minutes.,clean,7a.m,Have been cleanin
6、g,7:30 a.m,30 minutes,clean,Pairwork,run 30 minutes,4 hours,3 hours,2 hours,1 hour,A:How long has he/she been?,B:He/she has been.for,Linda,play soccer 45 minutes,Harry,Tom,Play piano,Alice,Play computer,Alan,Watch TV,Jim,ride,Sam,Lu Ning,Li Chen,To raise money for charity,4 hours,4 hours,1 hour,Read
7、 3a and then fill in the blanks.,1b.Listen.A reporter is talking to the participants in a skating marathon.Fill in the chart below.,Alison,Sam,Victor,Celia,Ive been skating for five hours.,I skated for two hours.,How long hasbeen skating?,He/She has been skating for,How long did skate?,He/She skated
8、 for,2a Listen to the interview with the skating marathon winner and check the questions you hear.,I.Write the questions:1_He has been standing there for four hours.2_I have been riding a bike since I was ten years old.3_She has been walking for five hours.4._Ive been watching TV since 7:00.5._Hes been waiting for the train for an hour.,Homework,
