中心句拓展的时候注意要有主有次，就好比我们说一句话有主句和从句，除了从句，还有其他的次重点吗？今天我们来学习一下哦！
例子1：Some people say that advertising has positive economic effects. Others think it has negative social effects because it will make people feel dissatisfied with who they are and what they have. Discuss both views and give your own opinion.有人说广告有积极的经济效应。另一些人认为它有负面的社会影响，因为它会让人们对自己和自己拥有的东西感到不满。讨论两种观点并给出你自己的观点。
On the one hand, proponents of advertising （说出倾向支持）argue that it has numerous economic benefits（说出中心句有经济价值）.For one, advertising can create demand for goods and services（解释前面的经济方面的好处）, which can boost sales and profits for businesses（加了一个从句，属于次重点的一种）. This, in turn（插入语，也是次重点的一种）, can lead to job creation and greater economic activity（说了结果）. Additionally, advertising can increase the competitiveness of the market（解释了另一个）, as businesses try to differentiate themselves from their competitors and offer unique products and services（as带出了一个原因，属于次重点的一种）. This can lead to greater innovation and better products for consumers（结果）.
On the other hand, critics of advertising （说出倾向支持）argue that it can have negative social effects（中心句，说有社会影响）. For example, advertising can create unrealistic expectations for people, particularly with regard to appearance and lifestyle（particularly衔接词带出一个次重点）. This can lead to feelings of dissatisfaction and disappointment when people are unable to attain these standards（说结果）. Additionally, advertising can create a culture of consumerism（解释另一个社会影响）, where people are encouraged to buy more and more things（次重点，从句解释一下什么是消费主义）, even if they don't need them（衔接，次重点说即使怎么样）. This can lead to environmental degradation and other social problems（说结果）.
例子2：The best way to learn a culture is to learn its language. Do you agree or disagree?学习一种文化的最好方法是学习它的语言。你同意还是不同意?
On the one hand, learning a language can be a gateway to understanding a culture（倾向agree）. Language is a reflection of a society's values, beliefs, and history（原因1）. By learning a language（介词短语，次重点）, one gains access to the intricacies and nuances of its culture, including its customs, traditions, and ways of thinking（宽泛到具体，次重点）. Furthermore, language can help build connections with people from different cultural backgrounds（原因2）, leading to greater empathy and cross-cultural understanding（分词带出次重点）.
On the other hand, language is not the only way to learn about a culture（说不是唯一的方式）. One can gain knowledge of a culture through many other means（说有其他方式）, such as reading books, watching movies, and interacting with people from that culture（宽泛到具体）. In some cases, learning a language may not be necessary to understand a culture（说原因）, especially with the increasing availability of translations and interpretations（衔接，次重点）. Additionally, language learning can be a long and difficult process and may not be feasible for everyone（说另一个原因）.
In conclusion, while learning a language can be a valuable way to learn about a culture, it is not the only way（虽然有用，但不是唯一的方式）. Other means of gaining cultural knowledge can be just as effective（其他方式有用）, and language learning may not be necessary or feasible for everyone（不适合所有人）.
