Howlonghaveyoubeencollectingshells

1、i started teaching english in 2009.i am still teaching english now.how long have i been teaching english? i have been teaching english for 2 years.unit 6 how long have you been collecting shells?section ashellcollect shells收集贝壳收集贝壳marathonsskatea pair of skatesshe is skating.she is a skater.new word

2、s collect 收集收集shell 贝壳贝壳marathon 马拉松马拉松skate 滑冰滑冰skater 溜冰者溜冰者pair 一双，一对一双，一对a pair of skates 一双滑冰鞋一双滑冰鞋ive =i have discussion1. how long did you sleep last night?2. when did you start class today?3. how long have you been in class today?alisonvictor1b listen. a report is talking to the participants

3、 in a skating marathon. fill in the chart below.how long?alisonive been skating for five hours.sami skated for four hours.victorceliai skated for two hours.ive been skating for five hours.2 hourshow long has she been reading ?she has been reading for 2 hours.look and sayan hourhow long have they bee

4、n swimming?they have been swimmingfor an hour.成龙（成龙（ jackie chan ）1954:be born1961now: acthe has been acting for 50 years.how long has jackie chan been acting?find the rules1. i have been teaching english for 2 years. 2. she has been reading for 2 hours.3. they have been swimming for an hour.4. he h

5、as been acting for 50 years. 当我们谈论动作从当我们谈论动作从过去某一时间开始一直延续到现在过去某一时间开始一直延续到现在, 并且有可能持续下去时，我们常常用以下句型来表示并且有可能持续下去时，我们常常用以下句型来表示: have / has been + doing sth + for +一段时间一段时间 have / has是助动词是助动词,been是是be的过去分词的过去分词 eg. how long have you been swimming? i have been swimming for 3 years. how long has she been

6、skating? she has been skating for nine oclock.(the present perfect progressive tense)a:how long have you been playing the piano? b: ive been playing the piano for an hour. 2 years1 hourhow long _ he _?he _.hasbeen sleepinghas been sleeping for eight hourseight hourslinda/30 minutesalan / 3 hourstom/

7、45 minutesa:how long has linda been exercising? b: she has been exercising for 30 minutes. yaoming is playing basketball.2003-nowyaoming has been playing basketballfor eight years.how long has yaoming been playing basketball?15 minuteshow long has he been drawing a picture?he has been drawing a picture for 15 minutes. miss li1975: be born20012009:teach chinesehow long has miss li been teaching chinese?she has been teaching chinese for 8 years.today we have learnt some key vocabulary