一般过去时的时间状语主要有:yesterday (morning, afternoon, evening), last night (week, month, year), ago, the day before yesterday, in 2003, just now, long long ago, one day等
过去进行时的时间状语有:at this / that time yesterday, the whole evening, all day yesterday等。
例句:
He introduced Tom to us just now. 刚才他向我们介绍了汤姆。
She was doing some washing all day yesterday. 昨天她洗了一整天的衣服
其它区别:
1,强调动作的角度不同:
一般过去时强调动作的发生或状态的存在而过去进行时强调动作正在进行的延续性:
I got up at five the day before yesterday. 前天我是五点起床的。
He was painting the lab the whole day yesterday. 昨天他一整天都在粉刷实验室. 
2、 动词的特点不同
行为动词在这两种时态中均可使用。例如:
We planted trees two days ago. 两天前我们植树了。
We were planting trees this time last Friday. 上周五这时候我们在植树。。
3、 一般过去时的谓语动词既可是延续性的也可是终止性的过去进行时的谓语动词只能是延续性的。
例如:
Li Jian joined the army in 1998. 李健于1998年参军。( join为终止性动词)
She was cooking at that time. 那时她在做饭。(cook为延续性动词)