議論文的引言方式往往因人而異，主要是個人習慣使然。比方說，貓頭鷹習慣開頭造三句：申論主題，集中焦點，話分兩頭。感覺得到這種意見通常不受采用，難怪謝振禮老師推薦的【隱形模板】一直沒有市場。

然而，比較受歡迎的引言寫法有好幾種，都不忘交代議論文試題的背景。以下Introduction舉例來自搜索“tai lieu du hoc”（不屬于夜貓子）。有興趣的學友請直接咨詢。

1>Should governments spend money on space exploration, or should they spend the money on problems here on the earth?

With many global concerns such as war, poverty, hunger and pollution, many people question whether nations should waste money on exploring space. However, others are convinced that expenditure on space programs is justified. This essay will examine some arguments for any against space exploration.

2>Are zoos cruel to animals?

Many people have had their first experience of animals from visiting zoos as children, and feel they are important for education and conservation. However, others feel that zoos are unnatural, and are stressful and cruel for animals. This essay will discuss the importance of zoos and their essential role in conserving endangered wildlife.

3>Who should take care of our old people?

In many countries, most old people live with their sons and daughters. Increasingly, however, many families cannot take care of their parents. This essay will discuss some of the problems involved with taking care of old people, and discuss who should be responsible.

4>Does aid to poor countries works?

For the last fifty years, poor countries have been receiving huge sums of money from rich donor countries. Some of this money has improved lives, while much of it has disappeared or made no difference. This essay will discuss some arguments for and against foreign aid.

5>Should dangerous sports be banned?

Every year, thousands of people are injured or killed in sports such as boxing or motor-racing. Because of this, many people are opposed to such sports and want them to be stopped or controlled. This essay will look at some of the arguments for and against banning dangerous sports.

6>Do athletes deserve their high salaries?

Everyday, we read about new record contracts and salaries earned by sportsmen and women. Some people do not agree with these huge payments, while others believe that our sports heroes deserve every penny. This essay will look at some of the arguments for and against the high salaries of athletes.

資料來源還談到論證的“ideas”。舉一例：“Money Rewards for Employees”：

Topic>

Some companies reward employees for exceptional work by giving them extra money. Is this a good way of encouraging employees to work hard?

引言【贊成】Example 1: Introduction>"Support"

The primary reason why people work is because of money. Employees know this, and many companies reward outstanding employees with bonuses and cash rewards. This essay will illustrate that most people are motivated by money, and cash is a fair and effective way to show appreciation to the working staff.

引言【反對】Example 2: Introduction>"Oppose"

Many people argue that cash incentives are an unfair means of motivating employees, while others love the simple and practical gift of money for a job well done. There are circumstances where money is the best recognition for extra work, but there are other times it is not appropriate. This essay will outline some of the reasons why cash is not always a suitable motivator for excellent employees.

論證“Ideas”>（貓頭鷹習題：謝振禮老師建議新手（接著引言）繼續(xù)寫中體兩段與結(jié)論。參考以下素材+自創(chuàng)論證的理由，例子，細節(jié)。立場可以是贊成，也可以是反對。）

A. 【贊成資料】——Money awards are effective:

—Money motivates people, and extra money motivates people to work extra.
—Employees compete to raise productivity or standards.
—It is not always possible to promote people, so money is a simply way to reward workers.
—Money is acceptable to all workers.

B. 【反對資料】——Money is only sometimes effective, or sometimes does not work:

—If employees are highly paid, money may not be sufficient.
—Money may set employees against each other, leading to conflicts in the workplace.
—It may be difficult to determine the standard or basis for the decision to award an individual employee.
—Some employees may feel forced to compete.
—There are other ways to motivate employees.