在gmat備考之中，大家都會遇到gmat寫作中的一些問題，經過網友的分析總結，下面就來看看AA中的'“七宗罪”可以按照論證的原因、結果、論證過程三部分，歸為三個類別：因、果、證，接著就來看看具體情況。
1、因
就是原因上的問題，有以下三個：
可疑調查
樣本不足
結論無據
2、果
就是結論上的問題，有以下兩個：
無因果聯絡
二者擇一
3、證
就是論證過程上的問題，有以下兩個，縱向橫向各一個：
錯誤類比(橫向)
時地全等(縱向)
這樣，只要記住了三字訣：因、果、證，就很容易記牢全部七宗罪了。
順便分析一下本月JJ的一篇AA：
“Our total sales have increased this year by 20 percent since we added a pharmacy section to our
grocery store. Clearly, the customer’s main concern is the convenience afforded by one-stop
shopping. // 無因果聯絡，可能另有他因。 The surest way to increase our profits over the next couple
of years, therefore, is to add a clothing department along with an automotive supplies and repair
shop. We should also plan to continue adding new departments and services, such as a restaurant
and a garden shop, in subsequent years. // 時地全等 Being the only store in the area that offers such a range of services will give us a competitive advantage over other local stores.” // 結論無據