6. play an important part in... 对……起着重要的作用
◆ 疯狂实战
A: Besides dieting, exercising plays an important part in losing weight.
B: A balanced diet and exercise are the keys to good health.
A: 除了节食，锻炼对于减肥也能起到重要的作用。
B: 饮食平衡与锻炼是健康的关键。

A: Private enterprises are playing an important part in the development of China’s economy.
B: China’s economy is really growing at an amazing pace.
A: 民营企业在中国的经济发展中扮演着重要的角色。
B: 中国的经济增长速度实在惊人。