althongh as long as while之间的区别哪些可以放在句中或句首 ,哪些只能放在句中

althongh as long as while之间的区别哪些可以放在句中或句首 ,哪些只能放在句中
althongh as long as while之间的区别
哪些可以放在句中或句首 ,哪些只能放在句中

althongh as long as while之间的区别哪些可以放在句中或句首 ,哪些只能放在句中
1.although较正式,语气强
Although he was tired,he went on working.
2.although引导的从句放在主句前后均可,有时还可放在句中.
Although many difficulties are still ahead,we are determined to make greater achievements.尽管在前面的道路上还有许多困难,但是,我们决心要取得更大的成就.
He often helps me with my English although he is quite busy.尽管他相当忙,但是还常常帮我学英语.
3.although引导的从句不能与but,however连用,但可与yet,still连用.不能说：Although he was old,but he worked hard.应把but去掉.当然,保留but而去Although也可.
注意:although 的几不:
although不能指假设的情况
although不能作并列连词
although不能作副词,放在词尾
as long as 翻译成只要...就
1.As long as you don't betray me,I'll do whatever you ask me to (do).
只要你不出卖我,要我做什么我都愿意.
2.We'll ship the goods at an early time as long as there is a steamer.
只要有船,我们就尽早装货.
3.As long as live,I will help you.
只要我活着,
引导让步状语从句
常放在句首,译作“尽管”、“虽然”,比although或 though语气要轻.例如：
1.While I believe it is true,I cannot prove it.
虽然我相信那是真的,但我无法证明.
2.While any kind of athletic shoe can provide a certain amount of rebound,
energy-return sneakers are designed to maximize this effect.
虽然任何一种运动鞋都能提供一定的反弹力,但回力运动鞋能够使这种效果最大化.
三、引导条件状语从句
相当于as long as,译作“只要”.例如：
1.While there is life,there is hope.
有生命,就有希望.
2.While a spark of life remains,it is a doctor's duty to save the patient.
只要病人还有一息生机,医生就有责任挽救.

although：虽然, 尽管
仅用作连词，连接句子，构成让步状语从句
Although they are poor they are happy.
虽然他们很穷，但很快乐。
Although it was so cold, he went out without an overcoat.
天气虽然很冷, 他没有穿大衣就出去了。
as l...

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although：虽然, 尽管
仅用作连词，连接句子，构成让步状语从句
Although they are poor they are happy.
虽然他们很穷，但很快乐。
Although it was so cold, he went out without an overcoat.
天气虽然很冷, 他没有穿大衣就出去了。
as long as：只要, 在...的时候，既然
用作连词
I will cooperate as long as I am notified on time.
只要及时告诉我，我就会合作
As long as you've offered, I accept.
既然你已给我，我就接受
while：
用作连词：当...的时候, 虽然，然而，而，而且
While he was eating, I asked him to lend me $2.
当他正在吃饭时,我请他借给我二英镑。
While I understand what you say, I can't agree with you.
虽然我理解你的意思，但我还是不同意。
The soles are leather, while the uppers are canvas.
鞋跟是皮的，而鞋面是帆布的，
while还可用作名词：一会儿, 时间
The project wasn't worth my while.
这项方案不值得我花工夫
Wait a while.
等一会儿。

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although意为"尽管" 一般引导让步状语从句 不与but连用。
as long as意为"只要"。。
while意为"当。。的时候" 后面接动名词。还可以用在句中，表示“但是，然而”的意思。
希望可以帮到你！GOOD LUCK!!