使用過(guò)去進(jìn)行時(shí)應(yīng)注意的幾點(diǎn)：
一、過(guò)去進(jìn)行時(shí)的基本用法，過(guò)去進(jìn)行時(shí)主要表示過(guò)去某一時(shí)間正在進(jìn)行的動(dòng)作。如：
He fell asleep when he was reading. 他看書時(shí)睡著了。
We were expecting you yesterday. 我們昨天一直在等你。
He was playing while I was studying. 我在做功課時(shí)他在玩。

二、過(guò)去進(jìn)行時(shí)可表示按計(jì)劃、安排過(guò)去某時(shí)刻將要發(fā)生的動(dòng)作。如：
He said they were leaving for Beijing this afternoon. 他說(shuō)他今天下午要去北京。

三、動(dòng)詞hope, wonder等的過(guò)去進(jìn)行時(shí)常用來(lái)表示提出要求，雖然表示現(xiàn)在的內(nèi)容，但語(yǔ)氣比一般現(xiàn)在時(shí)或一般過(guò)去時(shí)要委婉。如：
I was wondering whether you could come to join us. 我想你能否過(guò)來(lái)跟我們一起活動(dòng)?
I was wondering if you could give me a lift. 我不知你能否讓我搭一下車。
We were hoping you would stay with us. 我們很希望你能跟我們住在一起。
How much did you want to spend, sir? 先生，您打算花多少錢？
注：一般過(guò)去時(shí)也有類似用法，但比較而言，用過(guò)去進(jìn)行時(shí)顯得更客氣，更不肯定。

四、與現(xiàn)在進(jìn)行時(shí)相似，過(guò)去進(jìn)行時(shí)中有always, forever, continually, constantly等副詞修飾時(shí)，表示說(shuō)話人的滿意、贊賞、驚訝或厭煩的感情色彩。如：
He was always thinking of others. 他總是想到人家。
They were always quarreling. 他們老是吵架。
The boy was continually asking questions. 這個(gè)男孩子老是問(wèn)東問(wèn)西的。

五、注意動(dòng)詞be的過(guò)去進(jìn)行時(shí)
動(dòng)詞be的進(jìn)行時(shí)也可表示過(guò)去一時(shí)的表現(xiàn)或暫時(shí)的狀態(tài)。比較：
He was friendly. 他很友好。(指過(guò)去長(zhǎng)期如此)
He was being friendly. 他當(dāng)時(shí)顯得很友好。(指當(dāng)時(shí)一時(shí)的表現(xiàn))