①This last experience had a profound effect on Timoteo.
②He was driving a lorry load of bananas when he came off the road at a bend and fell three hundred metres down the mountain.
③Before he volunteered to direct the traffic, Timoteo had had lots of jobs.
[语法领悟]
(1)句①用了一般过去时，表示过去某个时刻发生的动作。
(2)句②用了过去进行时，表示过去某一时刻或某一段时间内正在发生的动作，谓语动词的构成为：was/were＋doing。
