张老师继续以2018年6月的大学英语四级（CET 4）写作试题为例，展示如何通过举例的方式轻松扩展英语段落。
Directions: For this part, you are allowed 30 minutes to write a short essay on the importance of speaking ability and how to develop it. You should write at least 120 words but no more than 180 words.
该作文要求我们阐述speaking ability的重要性，以及如何培养speaking ability.
我们以阐述speaking ability的重要性为例，来说明如何通过举例扩展这一段落。
STEP 1: 写中心句英语段落第一句话大多为中心句。在大学英语四级写作考试中，最好也为每段话写一个中心句。
STEP 2: 举例扩展Speaking ability is definitely important for people.
在中心句中提到，speaking ability 对people很重要。那么
1.people的具体例子有哪些呢？
- people: students, teachers, employees, sales managers, doctors, drivers, waiters....
2.speak的具体例子有哪些呢？
students:
- speak: present views during a teaching session.
- 关于什么views？views about certain topics.
- 关于什么topic？topics like nuclear weapons or an economic policy
sales managers
- speak: promote their products to their customers by effective speaking
- 什么products? local specialties, smart phones and automobiles
- 什么customers? customers from different parts of the world
- 在哪里？at product promotion meetings
有了上面的例子，我们很快可以对中心句进行扩展如下：
STEP 3：对给出的例子进行总结说明Speaking ability is definitely important for people. College students are likely to be required to present their views during a teaching session about certain topics like nuclear weapons or an economic policy. A sales manager needs to promote his or her products, such as local specials, smart phones and automobiles, to customers from different parts of the world by effective speaking at various product promotion meetings.
Without the ability to speak confidently in public, those tasks will be unable to be completed efficiently.
最后将所有的句子汇总得出如下段落：
Speaking ability is definitely important for people. College students are likely to present their views during a teaching session about certain topics like nuclear weapons or an economic policy. A sales manager needs to promote his or her products, such as local specialties, smart phones and automobiles, to customers from different parts of the world by effective speaking at various product promotion meetings. Without the ability to speak confidently in public, those tasks will be unable to be completed efficiently.（ 80 words）
大家如果觉得对于四级作文，字数过多的话，可以对标黑体的部分细节进行删减.
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