时代和文化一直在变唯一不变的就是变化本身Times and cultures are constantly changing.The only thing that remains unchanged is change itself.
6) 定语从句:who指代the man在从句中做主语.写作句式同位语从句1. It shows a common phenomenon nowadays that children are the focus of families， shouldering the hope of their parents.它展示了当今一个普遍现象:孩子是家庭的中心，肩负着父母的希望。
