句型轉(zhuǎn)換 1.They have been talking for the whole three hours.（改成一般疑問(wèn)句）
1.__ they__ __ for the whole three hours?
2.We played basketball three hours ago.（改為現(xiàn)在完成進(jìn)行時(shí)）
We __ __ __ basketball __ __ __.
3.He has been writing .（對(duì)劃線句子提問(wèn) “”是劃線句子）
__ __ __ he been writing?
4.My mother has been teaching math here for twenty years.（用since改寫(xiě)）
My mother has been teaching math here __ __ __ __.
速度（今天內(nèi)..）