1.跑題或不相關There are many reasons to buy a car, preferably a nice car.這個意思與okay for children to fail sometimes.所表達的意思很普通大多數人都已經知道到了，因而就沒有必要再說出來。這一點是很多人在託福寫作中都會犯的錯誤。
2.標點問題I love animals. And I like to help them. Because they are helpless. So I want to become a vet.這是一個非常普遍的問題!許多學生在句子中使用了太多的句號，尤其是當他們用手寫的時候。標點常常是大家在託福寫作中最容易忽視的地方，一定要注意標點的作用
3.重複冗餘Personally, I believe what the newspaper prints.一種意思的表述不止一次，或者某個詞語不必要。
4.單數/複數Many year ago, dinosaur roamed the Earths.單詞需要從單數變為複數，或者由複數變成單數。單數可數名詞單數可數名詞不能單獨使用，應該將其變為複數形式或者加上限定詞(a, the, my, his, her, Garys, no, any, 1, 3, 50, most,等等)。
5.拼寫錯誤主語、動詞或賓語有問題I want to buy something for my mother that she will like it. There was a terrible accident happen yesterday.句子的基本結構有問題 缺少主語、動詞或賓語，或者這些成分重複。
6.語氣與文章不符I was kind of mad at the guy who vociferated angry words at me. I have heard many wonderful things about such cosmopolitan cities as Paris, London, Tokyo, and Hong Kong and I would love to visit these cities to check them out.語氣與文章其他部分不相符可能是過於正式或者太不正式。
7.代詞指代不明If people do not speak the same language, it has a greater chance of miscommunication. I intend to complete my studies in the United States because they have good programs there.代詞所指代的指示詞(介詞所代替的名詞)不清楚。
8.過於籠統We should use our resources on Earth because the Earth is getting worse. 句子或它所表達的.意思過於籠統，不能提供多少資訊。導致託福寫作低分的主要原因就是這個。
9.動詞時態錯誤Yesterday I will go to the store because tomorrow I needed some food.動詞時態不正確檢查一下是應該用現在時、過去時、將來時還是完成時等等。
10.選詞不恰當I was late getting home because I lost my way.在這種情況下不應該使用該詞可選擇更好的詞語或者所使用的詞語與文章的總體語氣不符。這也是在中國考生中導致託福寫作低分的普遍存在的問題。
11.單詞形式不當I want to creation a great web site so that I can becoming wealth.所使用的單詞的形式不正確檢查一下應該使用該詞的名詞、形容詞或副詞形式的哪一種。
12.用詞錯誤Even I dont speak Spanish, I was able to find a bathroom in the department store. I gained a lot of pounds during vacation.用詞錯誤或在此種情況下該詞不是最佳用詞。
這12個託福寫作低分原因是大家在託福寫作過程中所犯的錯誤的大集合，非常有借鑑價值。所以希望大家對照自己的託福寫作練習，儘量避免這些，爭取拿高分。