Howlonghaveyoubeencollectingshells2

1、unit 6how long have you been collecting shells?城關(guān)一中城關(guān)一中 陸艷艷陸艷艷 skate skated skated skating draw _ _ _ have _ _ _ listen _ _ _ am/is _ _ are _ _ 當(dāng)當(dāng)我們談?wù)搫?dòng)作從我們談?wù)搫?dòng)作從過(guò)去某一時(shí)間開(kāi)始一直延續(xù)到現(xiàn)在過(guò)去某一時(shí)間開(kāi)始一直延續(xù)到現(xiàn)在, 并且有可能持續(xù)下去時(shí)，我們常常用以下句型來(lái)表示并且有可能持續(xù)下去時(shí)，我們常常用以下句型來(lái)表示: for +一段時(shí)間一段時(shí)間have / has been + doing sth + since +過(guò)去的時(shí)間點(diǎn)過(guò)去的時(shí)

2、間點(diǎn) since + 從句從句 (一般過(guò)去時(shí)一般過(guò)去時(shí))have / has是助動(dòng)詞是助動(dòng)詞,been是是be的的過(guò)去分詞過(guò)去分詞 (the present perfect progressive tense)how long has she been dancing?she has been dancingfor 3 hours.since 3 hours ago.3 hoursyaoming is playing basketball.2003-2009yaoming has been playing basketballfor six years.how long has yaoming

3、 been playing basketball?since six years ago.15 minuteshow long has he been drawing a picture?he has been drawing a picture for 15 minutes. since 15 minutes ago. what is / are doing? how long has / have .been?using since /for: 45 minutes half an hour 2 years 5 years一、用一、用 for或或since填空填空1. i have bee

4、n practicing my oral english _ 10:30.2. mary has been running _ 15 minutes.3. sarah has been sleeping _ 9:00.4. dale has been talking on the phone _ 5 minutes.5. tom has been studying chinese _ he was 6 years old.sinceforsinceforsince二、選擇填空二、選擇填空( )1. ive been skating _ three hours today.( )1. ive b

5、een skating _ three hours today. a. about a. about b. for b. forc. sincec. since( )2. weve been studying english _two years ago. a. for b. from c. since( )3. she started skating _ 9 oclock. a. for b. at c. since( )4. sam _ collecting shells for five years. a. isb. started c. has been( )5. how long h

6、ave you _ today? a. swimming b. been swimming c. started swimmingbcbcb定義：定義：表示某動(dòng)作從過(guò)去開(kāi)始，一直延續(xù)表示某動(dòng)作從過(guò)去開(kāi)始，一直延續(xù)到現(xiàn)在經(jīng)歷了多長(zhǎng)時(shí)間到現(xiàn)在經(jīng)歷了多長(zhǎng)時(shí)間,常有可能持續(xù)下去常有可能持續(xù)下去,常和表示一段時(shí)間的狀語(yǔ)連用。常和表示一段時(shí)間的狀語(yǔ)連用。 此時(shí)態(tài)包此時(shí)態(tài)包含現(xiàn)在進(jìn)行時(shí)的含義，也包含現(xiàn)在完成時(shí)含現(xiàn)在進(jìn)行時(shí)的含義，也包含現(xiàn)在完成時(shí)的含義的含義。時(shí)間狀語(yǔ)時(shí)間狀語(yǔ): 1. for + 一段時(shí)間一段時(shí)間 2. since + 過(guò)去的時(shí)間點(diǎn)過(guò)去的時(shí)間點(diǎn) 3. since + 一般過(guò)去時(shí)的句子一般過(guò)去時(shí)的句子構(gòu)成：構(gòu)成：