四級和六級考試寫作雖然曾經採用相同的命題，但是評分卻有差別。在寫作測試和教學中，考生和教師都應該敏銳地把握這些差異。具體地講，語彙、語型、句法和章法結構多個方面在深度和準確程度上有差異 。
實際上不同的考試使用相同或者相似的.命題，在國外測試中屢見不鮮。託福和雅思，GMAT 和GRE命題很多時候是相同的。可是考試的評分重點有很大的不同。
寫四級作文，考生應該注意不要超過四級考試的詞彙範圍。句法結構要有適當的變化，但是不要使用過於複雜的從句。否則，錯誤的複雜句子遠遠不如正確的簡單的句子。
我們用一道具體的題目分析四級和六級的差別。
篇一：1998年1月
Part Ⅴ Writing (30 minutes)
Directions: For this part， you are allowed thirty minutes to write a composition on the topic Harmfulness of Fake Commodities。 You should write at least 100 words and you should base your composition on the outline (given in Chinese) below:
1。 目前社會上有不少假冒僞劣商品(fake commodities)。爲什麼會有這種現象?
2。 舉例說明假冒僞劣商品對消費者個人、社會等的危害。
Harmfulness of Fake Commodities
範文一
Each individual encounters such troubles as sickness and discomfort situations in his or her development。 Similarly， each society is inevitably harmfully impacted by immoral or even illegal economic activities in the process of its evolvement。 The most notorious and harmful among these despicable actives are fake commodities。
Fake commodities， like a virus that intrudes and cripples an organism， exert alarmingly detrimental influences on each individual consumer， the community， and the social mores as well。
They directly hurt the consumers by providing products that are priced highly but inferior in quality。 Sometimes such products as faked medicine or foods can threaten consumers’ life， needless to mention consumers’ economic loss。 The more fake commodities a society has， the more exacerbated the moral and ethic in that society。
What the society must immediately address is to minimize the quantity of any fake commodities and eradicate any opportunity to manufacture them。
篇二：1。 類比性思維和寫作手法處理抽象複雜的命題
2。 比較結構的句型寫作訓練
3。 主語從句爲代表的複雜句法結構
4。 定語從句的訓練
範文二
Economic boom should bring people a more comfortable and convenient life。 Ironically， the more commodities available in a society whose economic fabric is not woven by legal and moral warp and woof ， the less and less security the average consumers can have。 In fact， even today the public is still jeopardized by fake commodities that flood almost each developing country。
Fake commodities directly harm the average individual consumers in a series of ways。 First they are usually inferior in quality and thus cannot meet consumers’ ends。 Take a fake watch as an example， it is sold at the same price as is the genuine one but seldom can it give time precisely。 Secondly， they might threaten consumers’ health and life in case of fake foods， medicine， and beverages。 Some patients are seriously endangered by taking fake medicines。 Some even lose their life immediately after eating fake soybean sauces and vinegar。 The society as a whole is also detrimentally infected by fake commodities as far as the moral and ethic is concerned。
