文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（^），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线（ ），并在该词下面写出修改后的词。
注意：1.每处错误及修改均仅限一词;
Sports and games do much good to our health. They can make us strongly and keep us fit. Especially they can be of very value to people who work with their brains most of the day, for sports and games give people valuable practices in exercising the body. Sports and games also very useful in character-training. They usually demand not only of physical skill and strength but also courage, discipline and teamwork. For boys and girls, which is learned on the playground often has a deep effect on their characters. If each of them learned to work for his team and not for him on the football field, he will later find it natural to work for good of his country, instead of for only his own benefit.
1.strongly---strong 2.very---great 3.practices---practice 4.also前加are
5.去掉of 6.which---what 7.characters---character 8. learned---learns
9.him---himself 10.good前加the
