please help me，thank you 11). 一方面，有人认为大学课程应该由专家来制定因为他们更了解学生需要哪些知识和技能。(状语从句) On the one hand, some people believe that college courses should be decided by experts because they more understand about what knowledge and skills they need. 12). 另一方面，支持学生自己选择课程的人们认为这能增加他们学习的动力。(定语从句的考察) On the other hand, people who support students choice courses by themselves believe it would be increase their motivation to learn. 13). 学生们可以通过艺术课程来提高自己的表达能力。(注意中文惯性翻译错误问题，不要直接字面翻译) Students can develop their ability to express themselves by art courses. 14). 有一个大幅的增长在老年人比例上，从1990年的13%增长到了2010年的37%。(用there be句型来翻译，注意时态) there is a large increased in the percentage of orders，with from 1990 to 13% in the year of 2010 to 37% 15). 上寄宿学校的孩子比走读学校的孩子更加独立，因为他们有更多机会自己来解决问题。 instead of day school， board children are more independent, because they have more opportunities to solve their own problems. 16). 政府应该做的是对电影和游戏进行分级。(用what….的主语从句来翻译) what the government should do is to classify movies and games. 17). 体重的增加可以由如下原因来解释。(用被动句，主语用抽象名词短语) Weight gain can be explained by the following reasons 18). 有更多的耐心是一个主要原因为什么小学里有更多女老师。 More patience is one of the main reasons why there are more female teachers in primary schools. 19). 不可否认金钱和幸福之间有紧密的联系。(It is 句型翻译) it is not that money and happiness have close relationship. 20). 学生的学习能力有很大的差别。(用there be句型翻译) there is a wild rang of different about students’ learn ability. 21). 我认为虽然孩子们可以从电脑游戏里得到很多好处，但是他们花在这些游戏上的时间应该被合理控制。(用although的从句来翻译) although children ，in my opinion ，can get a lot of benefits from computer games, the time spending on these games should be properly controlled.