although和however的用法PPT课件

1. but 连词，“但是”。

用来引出微弱的反对意见，是口语中的常用词。

例如：I was going to write, but I lost your address.我本来要写信的，可是把你的地址弄丢了。

2. however ①副词，“可是；不过；然而；无论如何；不论到什么程度”。

however比but的词义还要弱些，并不直接引出相反的意见，因此，常用作插入语。

例如：I’d like to go with you; however, my hands are full.我很想和你一块儿去，可是我忙不过来。

②连词，“不管用什么方法；无论什么方式”。

例如：However I cook eggs, the child still refuses to eat them.不管我用什么方法做鸡蛋，小孩还是不肯吃。

3.although 连词，“虽然；尽管”。

although与though大致相同，口语中though比较常用。

例如：Mr. Hall understands that although maths has always been easy for his son, yet this problem is not easy for him.Hall先生明白，尽管数学对他儿子来说一直很容易，但这道题对于他来说并不简单。

4. while 连词，“但；却；然而”。

它表示对比或相反的情况。

例如：You like sports, while I prefer music.你喜欢体育，而我更喜欢音乐。

[小试身手]Ⅰ. 用but，however，although和while填空。

1. , they did not seem to have much effect.2. He drives not carefully slowly.3. many difficulties are still ahead, we are determined to make greater achievements.4. He said that it was so; he was mistaken, .5. He looks honest, actually he’s a rogue (无赖).6. He went out for a walk, I stayed at home.7. cold it is, she always goes swimming.8. I’m very sorry, I can’t see you today.Ⅱ. 单项填空。

although用法although引导的从句放在主句前后均可，不能与but、however连用。

1、although的意思是：虽然，尽管；但是，然而，较正式，语气强烈He was in love with her, although a man seldom puts that name to what he feels.他爱上了她，虽然一个男人很少用这个词来形容他的感受。

2、although引导的从句放在主句前后、以及句中均可。

although放主语前的例句：Although the diaminds are expensive, they last forever and never go out of style.尽管这些钻石贵，它们永远耐用并且永不过时。

although放主语后的例句：It would appear that Milton has stopped addressing the muse, the HeavenlyMuse, and that he has begun addressing himself although that's unclear.它所呈现的是弥尔顿已经不再跟缪斯讲话了，天国的缪斯，他已经开始跟自己讲话了，尽管这不太确定。

although放句中的例句：And it might turn out that although,normally, having what matters goes handin hand with surviving, logically speaking,they can come apart.也许结论就是，虽然通常，拥有这些重要的东西和生存息息相关，逻辑上来说，它们是可以分开的。

3、Although引导的从句不能与but, however连用，一般要么存在Although，要么存在however或者是but.存在Although的例句：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。

一、though 和 however 的基本含义1. though 表示“虽然”，用来引导让步状语从句，表示一种让步关系，常和 but 连用表示转折关系。

例如：Though it was r本人ning, John went out for a walk.2. however 表示“然而”，用来引导转折状语从句，表示一种转折关系，常放在句首或句中。

例如：I wanted to go to the movies; however, I had too much work to do.二、though 和 however 的用法区别1. 语法位置的区别：though 通常位于句尾，而 however 通常位于句首或句中。

2. 语气的区别：though 通常表达一种较强的让步，表示尽管如此；而 however 则表达一种较强的转折，表示然而或可是。

3. 表示转折的程度：though 表示较轻的转折；但 however 表示更为重要和显著的转折。

4. 句式结构的区别：though 引导的让步状语从句可以与主句并列，而 however 引导的转折状语从句通常位于句首，与主句呈现出对比的关系。

三、though 和 however 的用法实例比较1. 转折关系的使用示例：- Though it is r本人ning, we will still have a pic tomorrow. （虽然下雨，我们明天仍然要野餐。

）- I know that you want to go; however, I cannot allow it. （我知道你想去，但是我不能允许。

）2. 让步关系的使用示例：- Though she is young, she is very talented. （虽然她年轻，但她很有才华。

）- I will try to finish the project on time; however, I can't guarantee it. （我会努力按时完成这个项目，虽然我不能保证。

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。

1.CONJ-SUBORD虽然（表示对比）You use although to introduce a subordinate clause which contains a statement which contrasts with the statement in the main clause.Although he is known to only a few, his reputation among them is very great.。

虽然知道他的人不多，但他在这些人中名声却很响。

Although the shooting has stopped for now，the destruction left behind is enormous.虽然枪战目前已停止，但造成的破坏是巨大的。

2.CONJ—SUBORD虽然（表示惊奇或出乎意料）You use although to introducea subordinate clause which contains a statement which makes the main clause of the sentence seem surprising or unexpected。

【学生】老师，本单元我们主要学习了but, however, although和while的用法，请问，它们有什么异同点吗？【老师】这四个词都可以表示转折关系，但它们的词性、用法各有不同。

【学生】您能讲讲它们各自的用法吗？【老师】好的。

我主要讲讲它们在本单元中的用法及在高考题中所出现的状况。

1. but conj. 但是but用来引出微弱的反对意见，是口语中的常用词。

如：I was going to write, but I lost your address.我本来要写信的，可是把你的地址弄丢了。

They wanted to charge $5,000 for the car, but we managed to bring the price down. (2005全国) 那辆小轿车他们想要价5000美元，但是我们还是把价格给降了下来。

2. however adv. 可是；不过；然而however比but的词义还要弱些，并不直接引出相反的意见，因此，常用作插入语。

如：He hasn't arrived. He may, however, come later. 他还没到，不过，他可能过一会儿来。

You know all this as well as I do, however. 可是你对这一切的了解并不亚于我。

3. although conj. 虽然；尽管although与though大致相同，口语中though比较常用。

although用于陈述事实，而不用于假设。

也不可以把as though和even though中的though换成although。

although用于句首的情况较多，而though可以作副词用于句尾，作“但是；不过”解。

although 不能用于句尾。

although不与but等从属连词连用，但可以与yet, still等表示转折的副词连用。

如：Mr. Hall understands that although maths has always been easy for him, yet it is not easy for the students. (2003安徽) 豪先生明白，尽管数学对他来说一直很容易，但对于学生来说并不容易。

although与though的区别和用法一、用作连词表示“虽然”，两者大致同义，可换用，只是although 比though 更为正式：Though [Although] it was raining，we went there. 虽然下着雨，但我们还是去了那儿。

Though [Although] it was barely four o’clock, the lights were already on. 尽管才四点钟，灯已经亮了。

Though [Although] we are poor, we are still happy. 我们虽然穷，仍然很快活。

二、用作副词although 一般不用作副词，而though 可用作副词，且一般放在句末(不放在句首)，意为“可是”、“不过”：It’s hard work; I enjoy it though. 工作很辛苦，可是我乐意干。

He is looking fit, though. 但他看起来很健康。

You can count on him, though. 不过你可以指靠他。

三、用于习语在as though(好像，仿佛)，even though(即使，纵然)等固定短语中不能用although：She closed her eyes as though she were tired. 她闭上眼，仿佛很疲劳似的。

We felt as though we had witnessed the whole thing. 我们感到仿佛目击了整个这件事似的。

He is an honest man, I must say, even though I have opposed him. 尽管我反对过他，我还得说他是一个诚实的人。

She was always afraid of men, even though she had lots of boyfriends.尽管她有很多男朋友，她总是害怕男人。