1、乱用大词
First of all，children can earn money from their jobs，although there isn’t too much，but they will keep their salary gingerliness。
这里的gingerliness根本是不知所云。该句子还有以下问题：
1)该作文题目是讲学生是否应该做，因此children的出现就显得很莫名其妙;
2)although和but是不能连用的;
3)指代不明，they不知道是指代前面的什么;
2、用词不当
学生们写的作文里或多或少都会有一些用词不当的问题，但是要注意的是一些基本的错误是不能犯的。
In the show，if participators answer twenty problems that the host mentioned correctly，they will get five hundreds thousand U。S。 dollars as a prize。
problems应改为questions
3、拼写错误
这里的拼写错误不是指在考试时候的误打，而是本身对词汇拼写记忆的错误。
In conclusion，issue of whether parents are the best teachers is a complex one，requiring subjective judgement，consequently，there are no easy or certain answers。
judgement应改为judgment
4、表达中式
The second argument-it might have been noticed by others-is that in some occasion，it is quite difficult to compare parents to teachers because parents are a kind of people，teachers are a kind of vocation。
该句的表达过于中式化。
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