4周搞定2000+托福核心词
when
常考释义
OFFICIAL: And talking of bands, I'm sure I don't need to tell you this, but you must make sure that no one fiddles about with the black box by the fire door - that's a system that cuts in when the volume reaches a certain level.
OFFICIAL: And talking of bands, I'm sure I don't need to tell you this, but you must make sure that no one fiddles about with the black box by the fire door - that's a system that cuts in when the volume reaches a certain level.
来源于：剑雅11-Test1adv. 在…的时候；在…期间
on the day when I met him
在我见到他那天
He could remember a time when he had worked like that himself.
他还能记得自己一度工作起来也是那个样子。
adv. （用于直接疑问句）什么时候，何时
When did he go?
他什么时候离开的？
When is the press conference?
记者招待会何时举行？
When were you in this house last?
你上次待在这所房子是什么时候？
I'll be there this afternoon.—when?
我今天下午会到那儿。——什么时候？
conj. 一…就；刚…就
I'll have a talk with you when I get back.
我一回去就会找你谈话。
When we'd crossed the border, we started to relax.
一穿过边境，我们便放松下来。
conj. 当…时；在…时
She was reading when I came in.
我进来的时候她正在读书。
I met my wife four years ago when her daughter was nine.
四年前我遇到我妻子的时候，她的女儿九岁。
conj. （用于引出使句子的另外一部分内容显得惊人或不大可能的事实或评论）虽然，然而，可是
I thought I was wrong when in fact I was right.
我认为自己错了，而事实上我是对的。
conj. （用于引出某个观点、评论或问题的原因）既然，鉴于，考虑到
How can I love myself when I look like this?
我这个样子，怎么能对自己满意呢？
How did you pass the exam when you'd not worked for it?
你都没有下功夫，怎么可能通过考试？
conj. （用于引导从句，说明主句动作已经发生或将要发生时的情况）当…时，到…的时候
When he brought Imelda her drink, she gave him a smile.
当他把饮料拿给伊梅尔达时，她朝他笑了笑。
I'll start to think about it when I have to write my report.
我要写报告时会对此予以考虑的。
conj. （用于引导从句，说明某事物发生的条件）当…时，如果
It's not easy when you're a teenager.
这对于十来岁的孩子来说不容易。
It does not produce hydrogen when added to dilute acids.
加入到稀酸时不会产生氢气。
When making pastry, always handle the ingredients as little as possible.
做油酥点心时要尽量少触碰调料。
conj. （用于间接疑问句）什么时候
I don't know when the decision was made.
我不知道这个决定是什么时候做的。
It is important to check when the laboratory can do the tests.
核实一下实验室何时可以进行这些测试很重要。
conj. say when：（常用于祈使句，尤用在给人斟酒或给茶、咖啡等加奶时）够了请说一声
n. the when：（事件发生的）时间
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