The boy ran off the minute he saw the owner of the orchard.那个男孩一见到果园的主人就跑开了。

　　(2)在hardly/scarcely ... when/before ...和no sooner ... than ...结构中，主句用过去完成时，than, before或when所在的从句用一般过去时。

　　I had hardly told him the news when he stopped listening.

　　我一告诉他那则消息他就不听了。

　　He had no sooner finished his speech than the students started cheering.他一完成演讲，学生就开始欢呼起来。

　　[特别注意]　在hardly/scarcely ... when/before ..., no sooner ... than ...结构中，当hardly, scarcely或no sooner位于句首时，主句要用部分倒装。

　　They had hardly reached Edinburgh when they were ordered to return to London.

　　＝Hardly had they reached Edinburgh when they were ordered to return to London.

　　他们刚抵达爱丁堡就接到了回伦敦的命令。

　　3．till, until和not ... until/till的用法

　　until, till两者均表示"直到......为止"，引导时间状语从句。肯定句中，其主句谓语动词必须为延续性动词，表示某动作一直延续到某时间为止。not ... until ..., not ... till ...两者均表示"直到......才......"，not所在的主句的谓语动词必须为非延续性动词，表示某动作直到某时间才开始。until可用于句首，而till不可放在句首，till一般不用于强调句型。

　　The father waited until his daughter had finished her homework.那位父亲一直等到他的女儿做完家庭作业。

　　The baby didn't go to bed until/till his mother returned.

　　这个婴儿直到他的妈妈回来才睡觉。

　　4．after, before引导的时间状语从句

　　after表示"在......之后"，before表示"在......之前；还没来得及......就......"。

　　He changed his name after he left his hometown.

　　离开家乡后他把名字改了。

　　Before modern medicine changed the laws of nature, many children died of common childhood diseases.在现代医学改变自然规律之前，许多孩子死于一些常见的儿童疾病。

　　[特别注意]　(1)"It will be/was＋时间段＋before从句"表示"在......之前还要多久/过了多久才......"。

　　It will be half a year before I graduate.半年后我才毕业。

(2)"It won't be/wasn't＋时间段＋before从句"表示"过不了多久就....../没过多