The exam will not be given until next week,when we'll have gone over all the lessons.

考试下周才举行，到那时我们将会复习完所有的功课。

My father's birthday is this Sunday,when our relatives will come to celebrate it.

这个星期天是父亲的生日，届时我们的亲戚会来庆祝。

The Mid-autumn Day is coming,when we'll get together.

中秋节快到了，到时我们可以团圆了。

【知识小结】

when作为关系副词，引导定语从句，可用during which或in which来替代。若when引导的是非限定性定语从句，则从句和主句用逗号隔开。

【相关链接】

when作为连词，引导状语从句，有下列意思：

①当......时候

②一......就......=as soon as

③（与现在时连用）如果=if

④虽然；然而；可是=although

⑤既然=since,as

活学巧用

2.单项填空

（1）I shall never forget those years _________I lived in the country with the farmers,_________has a great effect on my life.

A.that;which B.when;which

C.which;that D.when;who

提示："我永远不会忘记我和那些农民在一起的日子，那对我的生活有很大的影响。"第二个定语从句关系词用which，代表主句表达的整个内容，谓语动词用单数，若用who引导，先行词为farmers，谓语动词则不用has。

答案：B

（2）Mary had to go to Beijing on June 15,_________happened to be her only son's birthday.

A.which B.when

C.then D.it

提示：虽然先行词June 15表时间，但从句缺少主语，不能用when充当，只能选关系代词which。

答案：A

3....，so that引导状语从句

【典型例句】

Please speak aloud so that I can hear you.

请大点声说话，这样我能听见。

I will give you all the facts so that you can judge for yourself.

我会给你所有的事实以便你可以自己判断。

He didn't get up early,so that he was late.

他没有早起床，结果迟到了。

I had no money with me,so that I had to walk home.

我身上没带钱，结果只得走着回家。