求英语高手来帮我看看这些句子有没有错误,或者可以改进的地方

求英语高手来帮我看看这些句子有没有错误,或者可以改进的地方
1.There are many famous universities in the United States,and then I introduces two famous American universities below the article.
2.No matter to study in the United States and life how many merits and demerits,we should grasp the opportunity to efforts to train and we will train for the comprehensive development of people.
3.There are many need to pay attention to of place for studying and living in the United States.I List some studying and living in the United States of the matters needing attention.
4.If we pay attention to the above points,our life will not meet some unnecessary trouble in the United States.

1、表示“在下文中”用in the article below比较好,原文会理解成“在文章的下面”（纸的下面）
2、语法完全混乱,No matter 后面要接句子, life 是名词后面怎么接how? opportunity to efforts 中to后面应该接动词,总之就是不知道你要表达什么
3、此处 need 是不可数,不能用many,而应用much,不知道你用of place 是表达什么,to后面应该接动词或名词, 后面应改成I List some matters needing attention when studying and living in the United States.
4、our life改成we, 因为life自己不会“遇到”问题,如果要表示生活上遇到问题,可说in life in the United States.
再问： 第二句是想说：无论是在美国学习和生活有多少优点和缺点,我们应该抓住机会,努力将自己培养全面发展的人。 那么你认为这句话该怎么用英语表达会更好呢？
再答： No matter how many advantages or disadvantages of studying and living in the United States there will be, we should grasp the opportunity and try our best to be fully developed people.