1.at the age of four 4岁时
2.a boy of sixteen一个16岁的男孩
3.make friends with her和她交朋友
4.be ready to help others乐于助人
5.a lively and smart girl一个活泼聪明的女孩
6.be warmhearted and goodlooking热心肠而且漂亮/俊朗
7.learn from each other and help each other相互帮助相互学习
8.be highly praised by the teachers and students得到老师和同学的高度称赞
9.participate in the Eighth Route Army参加八路军
10.be born in poor peasant family出生于贫苦的农民家庭