改为：Diligent，caring people use money only to buy what they need.
(3 )As a child, he was the youngest of the three children.
本句表达很是啰唆，可以简化。
改为：He was the youngest of three.

10. 综合性语言错误（Comprehensive Misusage)
综合性语言错误是指除了上述提到的几种错误以外，还有诸如语态、标点符号、大小写等方面的错误。
如：
(1 )Some people may conclude that approval is the best way to educate students，as what have mentioned by the expert Mr. Alexander S Neil.
本句中主被动语态使用混淆。
改为：Some people may conclude that approval is the best way to educate students, as what have been mentioned by the expert Mr. Alexander S Neil.
(2 )《Pride    and Prejudice》is one of my favorite novels.
英语中书名用斜体表示。
改为：Pride and Prejudice is one of my favorite novels.
(3 )most of us are ignorant of environmental protection.
英语句子要求句首单词的首字母要大写。
改为：Most of us are ignorant of environmental protection.