past progressive

1. ` I had been running 'is an example of the past progressive.
   我过去一直在跑是过去进行时态的一个例句。
2. In terms of the linguistic expressions of politeness mainly used in ELT in secondary schools, there are inclusive we, hedging devices, interrogative sentences, the simple past tense, the progressive aspect and the passive voice.
   就中学英语教学中的礼貌语言而言，主要表现形式有人称代词、模糊表达、疑问旬式、时体语态等。
3. The new concepts of the strong Markov property and rlaxed past progressive measurability on two-parameter processes are introduced in this paper.
   引入了两指标过程的强马氏性和宽过去循序可测的新概念。
4. The attitudinal past and progressive aspect in English, when used in sentences of requests and proposals, may have functions of flexibility and politeness.
   英语动词表态性过去时及进行体在表示请求、提议等句式中常带有委婉礼貌的功能。
5. Past research shows, diffusion of technology innovation is the best way and more rational option to achieve a progressive industrial cluster and maintain competitive advantage of it.
   有研究表明：技术创新扩散是实现产业集群技术进步、维持产业集群竞争优势的理性选择和最优途径之一；
6. The past decades have witnessed the progressive development of studies on migrant schoolchildren.
   在过去的十几年里，对民工子弟的研究得到了逐步的发展。
7. Chinese learners use the present progressive more than the past progressive.
   中国学习者使用现在进行体多于过去进行体。

noun

1. a progressive tense used to describe on-going action in the past
   1. `I had been running' is an example of the past progressive

   Synonym:    past progressive tense