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1、Unit 6How long have you been collecting shells? Period1 Section A(1a-Grammar Focus)I started teaching English in 2001.I am still teaching English now.How long have you been teaching English? I have been teaching English for about 5 years.since 2001.自从，自自从，自.以来以来已*He started teaching math when he was
2、 20 years old. He is 50 years old now and he is still teaching math.How long has he been teaching math?He has been teaching math 30 years ago.for 30 years.since he was 20 years old.前2 hoursHow long has she been reading ? She has been reading for2 hours.She has been reading since2 hours ago. half an
3、hourHow long has he been playing computer games?He has been playing computer gamesfor half an hour.since half an hour ago.45 minutesHow long have they been playing soccer? They have been playing soccerfor 45 minutes.since 45 minutes ago.an hourHow long have they been swimming?They have been swimming
4、for an hour.since an hour ago.15 minutesHow long has he been drawing a picture?He has been drawing a picture for 15 minutes. since 15 minutes ago. shell收集贝壳收集贝壳collect shellsmarathon马拉松赛跑马拉松赛跑skate n.a pair of skates n.He is skating.(v.)He is a skater.AlisonVictorSamCelia1b Listen. A report is talki
5、ng to the participants in a skating marathon. Fill in the below.How long?AlisonIve been skating for five hours.SamI skated for four hours.VictorCeliaIve been skating for five hours.I skated for two hours.1c PAIRWORKAsk and answer questions about the people in the picture.A: How long has Alison been
6、skating?B: Hes been skating for five hours.A: How long did Sam skate?B: He skated for four hours.! ! ! Hes=He hasListening 2a & 2b1.How long did you skate today? 2. How long have you been skating today?3. Was this your first skating marathon?4. Do you skate every day?5. When did you get your first p
7、air of skates?6. How long have you been skating?a. No, I skated in a marathon last year.b. Yes, I do.c. For six hours.d. Since I was 7 years old.QuestionsAnswersGrammar focus1. How long have you been skating? Ive been skating for five hours.2. How long did you skate? I skated for two hours. Ive been
8、 skating since nine oclock.(! ! ! Ive=I have)I have been skating for five hours.时态现在完成进行时时态现在完成进行时构成形式：构成形式：have / has been + Vinghave / has是助动词是助动词 been是是be的过去分词的过去分词表示从过去开始一直持续到现在的动作，表示从过去开始一直持续到现在的动作，现在可能仍在进行着现在可能仍在进行着,并有可能持续下去并有可能持续下去.你知道了吗?started playing table tennisstopped playingplayed table
9、 tennis197819972006Deng Yaping played table tennis for 19 years.has been playing basketball20061989started playing basketballYao Ming has been playing basketball for 17 years.How long has Yao Ming been playing basketball? How long did Deng Yaping play table tennis ?(The Present Perfect Progressive T
10、ense)表示动作从过去某一时间开始，一直延续到现在，可能还要延续表示动作从过去某一时间开始，一直延续到现在，可能还要延续下去。常和表示一段时间的状语连用。下去。常和表示一段时间的状语连用。They have been working for two hours. 他们已工作两小时了。他们已工作两小时了。for和表示一段时间的词组连用和表示一段时间的词组连用They have been running since six oclock. 从从6点起他们一直在跑。点起他们一直在跑。since 和表示过去某一时刻的词或词组连用和表示过去某一时刻的词或词组连用I have been waiting
11、for you since I came here. 自到这儿以来我一直在等你。自到这儿以来我一直在等你。since后可跟句子，句子时态多用一般过去时后可跟句子，句子时态多用一般过去时（二）（二）引导时间的介词引导时间的介词forfor与与sincesince的区别的区别( for与与since引导的短语用引导的短语用how long提问提问 )forsince表示时间的持续表示时间的持续表示表示“自从过去自从过去某某 一时间点以一时间点以来来”for + for + 时间段时间段since + since + 时间点时间点强调一段时间强调一段时间强调动作或状态强调动作或状态一直延续到现在一直
12、延续到现在用用forfor和和sincesince填空填空1.They have been learning Chinese _ they came to China.2. I havent seen her _ a long time.3. He has been living here _ 2001.4. She has been doing her homework _two hours.5. Its 5 years _ we left school.6. How long has Mary been a teacher? _ two years ago. sinceforsinceforsinceSince1.How long have you been wearing glasses? 2.How long have you been living in the town? 3.How long have you been studying English? 4.How long have you been doing sports in the morning? 5.How long have you been getting so lazy? 6.How long have you been having your bike? (拥有)请回答下列问题：
