【正文】
re doing sth. 過(guò)去進(jìn)行時(shí) 過(guò)去進(jìn)行時(shí)常用的時(shí)間狀語(yǔ) :at this time, at this time, at that moment, all day yesterday, from nine to ten last evening, 過(guò)去進(jìn)行時(shí)句子 +when sb. did sth. , Sb. did sth. +while+過(guò)去進(jìn)行時(shí)句子 ,at that time,(點(diǎn)鐘 +過(guò)去時(shí)間短語(yǔ) ,at nine o39。clock last night)