1、TOPIC SENTENCE,主题句,Definition of Topic Sentence,a collection of sentences with unity of purpose 主题句统领段落的主题,决定了段落的一致性。注：1866 年,Alexander Bain 首次提出英语段落主题句的概念为“a collection of sentences with unity of purpose” ,即主题句统领段落的主题,决定了段落的一致性。,Composition of Topic Sentence,subject主题； Controlling idea主题思想（态度）eg：Sm
2、oking cigarettes can be an expensive habit. 该句作为一个段落的主题句, 由两部分组成:“Smoking cigarettes”是主题, 而“an expensive habit”则表明作者对该主题的看法或态度。,The Place of Topic Sentence,The topic sentence is usually located in the front of a paragraph. 主题句通常位于段首。 例1: Our life today depends very much on energy. In towns and in vi
3、llages, on farms and in factories, machines have made life easier than it used to be. The machines use energy, and energy is needed for heating, lighting, communications, carrying goods - everything. Factories and industrial plants use a great deal of energy to make the things that we use and buy an
4、d sell. 这段文字所讲的主要是能源问题。第一句就概括性地提出“我们目前的生活很大程度上依赖于能源”。而随后出现的三句都是具体事例，对第一句进行说明和论述。我们可以断定第一句为该段的主题句。,But How Can We Write A Good Sentence？（TAT）,1）主题句要概括一定内容，不要空泛，否则扩展句将难以说明和支持它。eg：空泛：English language is very important.概括：English language is very important in our daily life.2）尽量使用简单句或简洁明了的句子。 eg：简洁：Coll
5、ecting stamps is her hobby.复杂: She likes collecting stamps which is her hobby.,3）主题句应该做到句子完整和表达的主题思想完整。 eg：不完整：How to write a composition.完整：How to write a composition is not an easy thing to talk about.4）关键词是直接表达主题的词汇，它决定段落的内容和展开的方法，引导整个段落的发展。 eg：There are several ways to boil the water.The task can be finished in three steps.,THANK YOU,BY 刘美卓,
