when引导时间状语从句
when是引导时间状语从句最常用的一个词,它涵盖的时间范围比较广泛,在作“当……的时候”解时,有下面几种常见用法:
1 表示在某个具体的时间里发生的动作。此时,when不能用as或while替换。
When she comes, I shall tell her to wait for you 她来的时候我会告诉她等你的。(指具体的时间点)
When his father died of illness in 1980, he was only two years old 1980年他父亲病逝时他只有两岁。(指1980年这个具体的时间点)
2 表示一个动作与另一个动作在同一时间发生,或一个动作在另一个动作所延续的时间范围之内发生。此时,when可以用as或while替换。
I hurt my shoulder when (while, as) I was playing basketball 我打篮球时弄伤了肩膀。
He entered the room when (while, as) the meeting was going on 正当开会的时候他走进了房间。
When (While, As) Tom was reading, Jim was writing 汤姆看书的时候,吉姆在写东西。
两个同时发生的动作,如果不是一次性而是重复性的,即过去或现在的习惯动作,可用连词when或whenever, 意思是“每当……的时候”。例如:
When (Whenever) he goes to town, he always visits his aunt 每当他去镇上,他都去拜访他姑姑。
She always felt ill when (whenever) she ate oyster 她每次吃牡蛎都会生病。
在上述两例中,不管是用when还是用whenever, 主句动词和从句动词或者都用一般现在时,或者都用一般过去时,分别表示现在或过去的习惯动作。
3 表示从句的动作发生后,主句的动作立即发生。此时,when表示动作的先后顺序,相当于after, 不能用as或while替换。
When he had done his homework, he watched television =After he had done his homework, he watched television 他做完作业后看电视。
When he had painted the windows, he painted the doors =After he had painted the windows, he painted the doors 他把窗户油漆完后,又把门油漆了。
在这里,when从句的谓语动词都用了完成体,when从句既可以置于句首,也可以置于句尾。但是,如果when从句的谓语动词用一般现在时或一般过去时,when从句只能位于句首,表示从句动作先于主句动作。
When he had done his homework, he watched television =He watched television when he had done his homework
When he had painted the windows, he painted the doors =He painted the doors when he had painted the windows
但是,“When he painted the windows, he painted the doors”这个句子则不能写成“He painted the doors when he painted the windows”
it
it
[It; it]
代名词
1 [第三人称单数中性主格] 它,它
2 [第三人称单数中性受格]
a [直接受词] 它,它
I saw ~
我看到它
I gave it him
我把它给了他
b [间接受词] 它,它
I gave it food
我给它食物
c [介系词受词]
I gave food to it
我给它食物
3
Go and see who it is
去看看是谁
It's me (
口语)是我
It says, "Keep to the left"
它 [标示] 写著「靠左边走”
It says in the Bible that
圣经上说…
It says in the papers that
报纸上说…
4 a
It is impossible to master English in a month or two
要在一两个月内精通英文是不可能的
It will be difficult for him to come so early
要他来得那么早是有困难的
It's kind of you to give me a present
你真好,送我礼物
It is no use trying
试也白试
It isn't certain whether we shall succeed
我们是否会成功还很难说
It is strange that he says so
他这样说真奇怪
It is said that the universe is infinite
据说宇宙是无限的
b [作形式上的受词,以代表后述实际主词的不定词片语、动名词片语、that 子句等]
I make it a point to get up early
我强调要早起
They considered it impossible for us to attack during the night
他们认为我们不可能在夜间攻击
You will find it very nice taking a walk early in the morning
你会发现在清晨散步很好
I think it necessary that you (should) do it at once
我认为你必须立刻做那件事
I take it (that) you wish to marry her
我以为你想和她结婚
c
It is a nuisance, this delay
这样拖延真受不了
5 [作非人称动词 (impersonal verb) 的主词]
a [天气、气候的冷暖]
It is raining
正在下雨
It is getting hot
天气渐渐变热
It looks like snow
好像要下雪的样子
b [时间、日期]
It will soon be New Year
快要新年了
It is Friday (today)
今天是星期五
How long does it take from here to the park
从这里到公园要多久
It takes time to get used to new shoes
穿惯新鞋需要时间
c [距离]
It is 2 miles to the station
到车站 (距离) 有两哩
d [明暗]
How dark it is !
好暗啊, [事情、情况] !
How goes it with you today
你今天觉得怎样
Had it not been for you, what would I have done
要不是有你 (的帮助) ,我真不知该怎么办呢
f 作 seem [appear,happen,etc] that 的主词
It seems (that) he has failed
看来他已经失败了
It happened (that) he was not present
碰巧他没有出席
6(口语)
a [作某种动词无意义的形式上受词]
Let's walk it
我们走路去
Damn it (all)!
该死!糟了!
You'll catch it from your father
你会挨你父亲的骂
Give it (to) him!
教训他一顿!
→ Go it
b
If we miss the bus, we'll have to foot it
如果我们赶不上公共汽车,我们只好走路
cab it (
美)坐计程车去
lord it
→lord vt
king it
→ king vt
queen it
→queen vt 2
c [作介系词的无意义、形式上之受词]
I had a good time of it
我玩得很愉快
Let's make a night of it
让我们痛饮一晚吧
7 [在 "it is[was] that [who,whom,which,etc] "的句型中用以强调句子主词, (动词或介系词的) 受词,副词片语]
It is I that [who] am to blame
该受责备的是我
It is the price that frightens him
使他吓一跳的是那价钱
It was Franklin who wrote "God helps them that help themselves"
写“天助自助者”这句话的人是富兰克林
It was Mary (that) we saw
我们看到的是玛丽
It was peace that they fought for
他们作战为的是和平
It was in this year that the war broke out
战争就是在这一年爆发的
It was beer (that) you drank, not water = It was beer, not water, (that) you drank
你喝的是啤酒,不是水
have had it →have v
have what it takes →what pron
If it had not been for →if
If it were not for → if
it
[It; it]
《Italian vermouth 之略》
不可数名词
(英口语)! (甜味的) 义大利的苦艾酒
gin and it
杜松子酒与甜苦艾酒的混合酒
it
[It; it]
《it 的转借》
不可数名词
1 ! (捉迷藏等游戏的) 鬼
2 (口语)
a 极致,理想 (the ideal)
In that blue dress she was ~
她穿上那件蓝色衣服美极了
As a Christmas gift, this is really it
当作耶诞礼物,这是最理想的东西
b 重要人物,第一号人物,头号人物
Among physicists he is it
在物理学家中他是佼佼者
3 (俚)性的魅力,性感 (sex appeal)
That's it
(1) (问题) 就在那里
(2)就像那样,那样就可以
That's it for today
今天到此为止 (就此结束)
(3)那样就结束,那就是全部
This is it
(口语)终于到了时候 [紧要关头] ; 果然不出所料
with it
(1)不落伍的,时髦的,现代化的
(2)领悟力强的; 精明的,机警的; 知内情的
get with it
赶上时代,顺应新潮流; 警觉,留神
IT (InformationTechnology) [ɪt]
it, 信息技术, 计算处理信息和数据通讯方法的总称
it
[It; it]
代名词
1 [第三人称单数中性主格] 它,它
2 [第三人称单数中性受格]
a [直接受词] 它,它
Isaw ~
我看到它
I gave it him
我把它给了他
b [间接受词] 它,它
I gave it food
我给它食物
c [介系词受词]
I gave food to it
我给它食物
3
Go and see who it is
去看看是谁
It's me (
口语)是我
It says, "Keep tothe left"
它 [标示] 写著「靠左边走”
It says in the Biblethat
圣经上说…
It says in the papersthat
报纸上说…
4 a
It is impossible tomaster English in a month or two
要在一两个月内精通英文是不可能的
It will be difficult forhim to come so early
要他来得那么早是有困难的
It's kind of you to giveme a present
你真好,送我礼物
It is no use trying
试也白试
It isn't certain whetherwe shall succeed
我们是否会成功还很难说
It is strange that hesays so
他这样说真奇怪
It is said that theuniverse is infinite
据说宇宙是无限的
b [作形式上的受词,以代表后述实际主词的不定词片语、动名词片语、that 子句等]
I make it a point to getup early
我强调要早起
They considered itimpossible for us to attack during the night
他们认为我们不可能在夜间攻击
You will find it verynice taking a walk early in the morning
你会发现在清晨散步很好
I think it necessarythat you (should) do it at once
我认为你必须立刻做那件事
I take it (that) youwish to marry her
我以为你想和她结婚
c
It is a nuisance, thisdelay
这样拖延真受不了
5 [作非人称动词 (impersonal verb) 的主词]
a [天气、气候的冷暖]
It is raining
正在下雨
It is getting hot
天气渐渐变热
It looks like snow
好像要下雪的样子
b [时间、日期]
It will soon be NewYear
快要新年了
It is Friday (today)
今天是星期五
How long does it takefrom here to the park
从这里到公园要多久
It takes time to getused to new shoes
穿惯新鞋需要时间
c [距离]
It is 2 miles to thestation
到车站 (距离)有两哩
d [明暗]
How dark it is !
好暗啊, [事情、情况]!
How goes it with youtoday
你今天觉得怎样
Had it not been for you,what would I have done
要不是有你 (的帮助),我真不知该怎么办呢
f 作 seem [appear,happen,etc] that 的主词
It seems (that) he hasfailed
看来他已经失败了
It happened (that) hewas not present
碰巧他没有出席
6(口语)
a [作某种动词无意义的形式上受词]
Let's walk it
我们走路去
Damn it (all)!
该死!糟了!
You'll catch it fromyour father
你会挨你父亲的骂
Give it (to) him!
教训他一顿!
→ Go it
b
If we miss the bus,we'll have to foot it
如果我们赶不上公共汽车,我们只好走路
cab it (
美)坐计程车去
lord it
→lord vt
king it
→ king vt
queen it
→queen vt 2
c [作介系词的无意义、形式上之受词]
I had a good time of it
我玩得很愉快
Let's make a night ofit
让我们痛饮一晚吧
7 [在 "it is[was] that [who,whom,which,etc] "的句型中用以强调句子主词, (动词或介系词的) 受词,副词片语]
It is I that [who] am toblame
该受责备的是我
It is the price thatfrightens him
使他吓一跳的是那价钱
It was Franklin whowrote "God helps them that help themselves"
写“天助自助者”这句话的人是富兰克林
It was Mary (that) wesaw
我们看到的是玛丽
It was peace that theyfought for
他们作战为的是和平
It was in this year thatthe war broke out
战争就是在这一年爆发的
It was beer (that) youdrank, not water = It was beer, not water, (that) you drank
你喝的是啤酒,不是水
have had it →have v
have what it takes →what pron
If it had not been for →if
If it were not for → if
it
[It; it]
《Italian vermouth 之略》
不可数名词
(英口语)! (甜味的)义大利的苦艾酒
gin and it
杜松子酒与甜苦艾酒的混合酒
it
[It; it]
《it 的转借》
不可数名词
1 ! (捉迷藏等游戏的) 鬼
2 (口语)
a 极致,理想 (the ideal)
In that blue dress shewas ~
她穿上那件蓝色衣服美极了
As a Christmas gift,this is really it
当作耶诞礼物,这是最理想的东西
b 重要人物,第一号人物,头号人物
Among physicists he isit
在物理学家中他是佼佼者
3 (俚)性的魅力,性感 (sex appeal)
That's it
(1) (问题) 就在那里
(2)就像那样,那样就可以
That's it for today
今天到此为止 (就此结束)
(3)那样就结束,那就是全部
This is it
(口语)终于到了时候 [紧要关头] ; 果然不出所料
with it
(1)不落伍的,时髦的,现代化的
(2)领悟力强的; 精明的,机警的; 知内情的
get with it
赶上时代,顺应新潮流;警觉,留神
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