at what time
何时,什么时候
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when did you last see him? 你上次见到他是什么时候?
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[with prep.]s
ince when have you been interested ?你从什么时候开始感兴趣的?
how soon
多久
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when can I see you? 我何时能见到你?
in what circumstances
在何种情况下
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when would such a rule be justifiable? 在什么情况下,这样的规定无可非议?
at or on which (referring to a time or circumstance)
当…时,其时(指时间或情况)
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Saturday is the day when I get my hair done .星期六是我做头发的日子。
at or during the time that
当…时,在… 时
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I loved maths when I was at school .我在学校时喜欢数学。
after
然后
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call me when you've finished .你完成后打电话给我。
at any time that; whenever
无论何时
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can you spare five minutes when it's convenient? 你能在方便的时候抽出5分钟的时间吗?
after which; and just then (implying suddenness)
一…就;正在这时
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he had just drifted off to sleep when the phone rang .他刚迷迷糊糊地睡下,这时电话铃就响了。
in view of the fact that; considering that
既然;考虑到
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why bother to paint it when you can photograph it with the same effect? 既然拍照也能达到同样的效果,你干吗要费事去画它?
although; whereas
虽然;然而,可是
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I'm saying it now when I should have told you long ago .我早就应该告诉你了,可是我现在才说。
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when + 时间状语从句 当…
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when + 条件状语从句 当…;在…的情况下
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When it comes to... 当提到...时
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sb was/were doing + when + 一般过去时句子 某人正在做某事,这时突然...
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sb was/were going to do / sb was about to do + when + 一般过去时句子 某人正要做某事,这时突然...
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sb had done + when + 一般过去时句子 某人刚做完某事,这时突然...
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when + 现在分词 省略主语和系动词
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when + 过去分词 省略主语和系动词
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when + 名词或形容词 省略主语和系动词
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when + 介词短语 省略主语和系动词
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"Old English