While Although though 不是都表示虽然吗?有什么区别?

1.在自然语序的让步状语从句中，although, though, even though的用法相同，均可置于句首或从句首，常与动词连用，只是thouth比另两者要通俗些。如：

Though/Although/Even though it’s hard work, I enjoy it.尽管这项工作艰难，我却喜欢它。

注意：不能用as代替though, although或even though。

2..在倒装语序的让步状语从句中，通常用though或as，不用although, even though。如：

Poor though/as I am, I can afford beer. 虽然我穷，我还可以买得起啤酒。

3.在省略了主语、be动词或行为动词的让步状语从句中，常用though/although,而不用as, even though, even if，如：

Her appointment was a significant（success）,although/though( it was a )temporary success. 她受聘虽然是临时性的，但却是一大成功。

4.although：while

这两个连词都可用于让步结构，但两者所连接的句子的主从关系恰好相反。（注：though与while也是这样)

比较：

Although it looks like a huge monster，that country is in essence a paper tiger．

虽然看起来像个庞然大物，那个国家在本质上却是一只纸老虎。

While it is in essence a paper tiger，that country looks like a huge monster．

尽管本质上是只纸老虎，那个国家看起来倒像个庞然大物。

这几个要多在实际练习中，运用了仔细体会，就会了。

希望满意，祝您进步：）

when, while这三个词都有"当……时候"之意,但用法有所不同,使用时要特别注意.

①when意为"在……时刻或时期",它可兼指"时间点"与"时间段",所引导的从句的动词既可以是终止性动词,也可是持续性动词.如：

When I got home, he was having supper.我到家时,他正在吃饭.

When I was young, I liked dancing.我年轻时喜欢跳舞.

②while只指"时间段",不指"时间点",从句的动词只限于持续性动词.如：

While I slept, a thief broke in.在我睡觉时,盗贼闯了进来.

辨析

①when从句与主句动作先后发生时,不能与while互换.如：

When he has finished his work, he takes a short rest.每当他做完工作后,总要稍稍休息一下.(when = after)

When I got to the cinema, the film had already begun.当我到**院时,**已经开始了.(when=before)

②when从句动词为终止性动词时,不能由while替换.如：

When he came yesterday, we were playing basketball.昨天他来时,我们正在打篮球.

③当从句的谓语是表动作的延续性动词时,when, while才有可能互相替代.如：

While / When we were still laughing, the teacher came in.正当我们仍在大声嬉笑时,老师进来了.

④当从句的谓语动词是终止性动词,而且主句的谓语动词也是终止性动词时,when可和as通用,而且用as比用when在时间上更为紧凑,有"正当这时"的含义.如：

He came just as (or when) I reached the door.我刚到门那儿,他就来了.

⑤从句的谓语动词如表示状态时,通常用while.如：

We must strike while the iron is hot.我们应该趁热打铁.

⑥while和when都可以用作并列连词.

Mike is tall while his brother is short.迈克的个子很高,然而他弟弟很矮.

Mary was on her way home when two big boys stopped her.玛丽正走在回家的路上,这时两个大个子男孩拦住她.

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