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必修3《Grammar》优质课PPT课件下载
2.There may, however, be other reasons that we don't know about.
3.However you look at it, it's still a mess.
4.Although he was ill, he worked hard.
5.While I like the color of the hat, I do not like its shape.
（自主学习）
Link words 连词
连接
词与词
短语与短语
句子与句子
本节课我们学习表示转折、对比关系的连词：but, however, although和while。
连词是虚词中的一种它不能在句子里独立地担任句子成分，而只能起 作用，连接 、 、 。
Lead in
Look at the link words “but” and “however” in these sentences, and answer the following questions:(P14)
(1) The report shows that we’re making progress but that we need to make greater efforts.
(2) In the last ten years in China, 150 million people moved out of poverty. However, the challenges are still great.
(3) More than 1 billion people in developing countries do not drink safe water. However, in other parts of the world, e.g. Eastern Europe, water is now mostly safe to drink.
Questions
Does however mean the same as but?
Which link word begins a sentence?
Which link word can join two parts of a sentence?
Which link word is followed by a comma?
Yes
However
But