2017考研英語語法小講：過去進(jìn)行時(shí)

　　由助動(dòng)詞be 的過去式 + 現(xiàn)在分詞構(gòu)成。其中be有人稱和數(shù)的變化，第一、第三人稱單數(shù)用was，其他用were.

　　1)過去進(jìn)行時(shí)動(dòng)詞主要表示在過去某一時(shí)刻或某一段時(shí)間內(nèi)正在進(jìn)行或持續(xù)進(jìn)行的動(dòng)作。過去進(jìn)行時(shí)經(jīng)常與過去時(shí)配合使用。例如：

　　This time yesterday, we were having an English lesson. 昨天這個(gè)時(shí)候，我們正在上英語課。

　　The teacher was giving us a lesson when Tom walked into the room. 老師在給我們上課時(shí)，湯姆走進(jìn)教室。

　　While we were having supper, all the lights went out. 我們吃飯的時(shí)候，燈滅了。

　　He was reading while she was setting the table. 她擺桌子時(shí)，他在讀書。

　　It was getting dark. The wind was rising. 天漸漸黑下來了。風(fēng)勢(shì)增強(qiáng)了。

　　2)過去進(jìn)行時(shí)動(dòng)詞常用always, continually, frequently 等詞連用，表示過去經(jīng)常發(fā)生的行為。這種用法表明帶有的感情色彩。例如：

　　The two brothers were frequently quarreling when they were young. 兩兄弟小時(shí)候常吵架。

　　In Qing Dynasty, China was always making concessions to western powers. 清朝時(shí)，中國總是對(duì)西方列強(qiáng)妥協(xié)。