一、详细释义:
adv.
什么时候,何时,什么情况下,什么场合下
例句:
I'd like to know when they'll let him out.
我想知道他们什么时候放他。
例句:
He asked no odds even when he was Bogged down in great difficulties
即使是在特别困难的情况下,他也从未要求过特殊照顾
(用语时间的表达方式之后)在那时,其时
例句:
The Queen's last visit was in May, when she opened the new hospital.
女王上次来访是在五月份,她那时主持了这座医院的落成典礼.
例句:
I used to eat out in the evenings when my parents were on night shifts.
那时,逢到我父母上夜班,我就在外面吃晚饭。
其时,当时,当场
conj.
在……时候,当……时,在……期间
例句:
Here the local were always barbered at this hour on this day.
原来本地人老是在这一天这个时候这个地方理发。
例句:
Books are her resort when she is lonely.
当她寂寞的时候就看书解闷。
在……之后
例句:
When I mingled with other families I distinctly discerned how peculiarly fortunate my lot was.
在我接触到别的一些家庭之后,我清楚地体会到自己可谓得天独厚的天之骄子。
例句:
She was the first to broach the idea of my escape when we realized the great new tasks.
在我们意识到新的伟大任务之后,是她首先提出了要我逃跑的想法。
在任何……时候
例句:
You can save the game at any time when you're at your bunk.
任何时候你都可以在你的床位储存你的游戏。
一……就,刚……就
例句:
He is prone to lose his temper when people disagree with him.
人家一不同意他的意见,他就发脾气.
考虑到,既然
例句:
Why use wood when you can use plastic?
既然能用塑料,何必非用木料?
例句:
I can' t tell you when you won' t listen.
既然你不想听,我就不告诉你了。
虽然,然而,可是
例句:
I should seem to be rejoicing when I am solemn all the time.
虽然我心里没有一丝笑意,但我还会显得高高兴兴的。
例句:
I stop for crganettes when I already have two packs.
虽然我已经有两包烟了,我还是停下来买。
n.
时间
pron.
什么时候,何时
例句:
Considerate products know when to bend the rules
体贴的软件知道什么时候调整规则
例句:
Since when has she taught here?
她从什么时候开始在这儿教书的?
二、词义辨析:
when,while,as
这些连词均可表示“当……时”引出时间从句。when所引导的从句,其谓语动词既可是持续动词,也可是短暂动词;谓语动词动作发生的时间可以与主句谓语动词的动作是同时,或之前、之后。 while句中的谓语动词应为持续动词,不用短暂动词,谓语动作发生的时间通常与主句谓语动词动作发生时间是同时。as侧重指从句与主句的动作同时进行,谓语动词可以是持续性的,可以是短暂性动词。