1)概念:表示過(guò)去某時(shí)正在進(jìn)行的狀態(tài)或動(dòng)作。
2)過(guò)去進(jìn)行時(shí)的主要用法是描述一件事發(fā)生的背景;一個(gè)長(zhǎng)動(dòng)作延續(xù)的時(shí)候,另一個(gè)短動(dòng)作發(fā)生。
3) 常用的時(shí)間狀語(yǔ)有this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while等。例如:
My brother fell while he was riding his bicycle and hurt himself. 我兄弟騎車時(shí)摔了下來(lái),受了傷。
It was raining when they left the station. 他們離開(kāi)車站時(shí),正下著雨。
When I got to the top of the mountain, the sun was shining.我到達(dá)山頂時(shí),陽(yáng)光燦爛。
典型例題
1) Mary ___ a dress when she cut her finger.
A. made B. is making C. was making D. makes
答案C. 割傷手指是已發(fā)生的事情,應(yīng)用過(guò)去時(shí)。同時(shí),when表時(shí)間的同時(shí)性,"瑪麗在做衣服時(shí)"提供事情發(fā)生的背景,因此用過(guò)去進(jìn)行時(shí)。
2) As she ___ the newspaper, Granny ___ asleep.
A. read;was fallingB. was reading; fellC. was reading; was fallingD. read;fell
答案B.句中的as = when, while,意為"當(dāng)……之時(shí)".描述一件事發(fā)生的背景時(shí),用過(guò)去進(jìn)行;一個(gè)長(zhǎng)動(dòng)作發(fā)生的時(shí)候,另一個(gè)短動(dòng)作發(fā)生。句意為 "在她看報(bào)紙時(shí),奶奶睡著了。"句中的 fell(fall的過(guò)去時(shí)),是系動(dòng)詞,后跟形容詞,如:fall sick.