三、典型段落操练
要求：请撰写下列作文，注意基中论证观点段或对比论证段的写法。
练习一
directions : for this part , you are allowed 30 minutes to write a composition on the topic grades can't say everything . you should write at least 120 words and base your composition on the outline given below :
1.他数并不说明一切。
2.试举例论证。
练习二
directions : for this part , you are allowed 30 minutes to write a composition on the topic should customers buy cut-price products ? you should write at least 120 words and base your composition on the outline given below :
1.现在放多人都喜欢买打折商品。
2.而另一些人认为越是打折的商品越不能买。
3.你怎样看？
参考范文
练习一
grades can't say everything
第一段：提出观点段
for years many people had such thought that grades is of great significance to students . many of them just work hard with almost no play so as to get a satisfied grade . however , grades can't say everything .
第二段：论证观点段
the following reasons can support the argument . undoubtedly , high grades don't mean that one is excellent in everything . a case in point is that one may has a poor academic performance but show a great talent in music . furthermore , grades can be affected by many uncertain factors , like student's psychological state . for example , there are some excellent students who can't perform well just because they are too nervous . besides , sometimes some students cheat to get high grades which account for nothing .
第三段：总结观点段
all mentioncd above tell us that grades can't say everything . and it is only an indicator to evaluate one's comprehensive ability . therefore , we shoule make a proper use of grades to assess students ' ability .
练习二
should customers buy cut-price products ?
第一段：提出观点段
whem asked whether customers should buy cut-price produts , different people will offer different views . some people take if for granted that they would like to buy cut-price products since a discount is a great appeal . however , others maintain that it's not a wise and rational idea to buy discount products .
第二段：对比论证段
those people who hold the first opinion believe they can save themselves a lot of money . in addition , they can use less money to buy more products . however , still others do not agree this . in their opinions , the discount is merely a business means of attracting customers and enhancing their desire of purchasing . besides , they argue that the discount always tempt customers to buy something unnecessary .
第三段：总结观点段
weighing up these two arguments , i think customers should be alerter to cut-price products . for one thing , complaints about cut-price products rank first in recent days according to the newspaper . for another , cut-price products are usually not provided with an after-sales service like three guarantees for products . considering these factors into consideration , we may reasonably conclude that customers should think carefully when buying cut-prices products .