1 . Some teenagers had plastic surgery and it stopped them from returning to a normal life. (用定语从句改写)

3 . 这部短片由两部分组成，介绍了我校的历史和现状。(一句多译)
①The short film, ____________, introduces the history and present situation of our school. (运用分词短语作定语，consist)
②The short film, _____________, introduces the history and present situation of our school. (运用定语从句，consist)

4 . 许多人吃高脂肪的食物，导致肥胖和不同的疾病。
①Many people eat high­fat foods，________________ obesity and different diseases.(简单句)
②Many people eat high­fat foods，________________ obesity and different diseases.(复合句)

6 . I hope you can have a healthy eating habit. It is more beneficial to your future life and study.(用非限制性定语从句合并句子)

7 . They search for cultural relics and take photos of them.They will show the photos to the public to arouse their awareness of heritage preservation as well as gain their support. (用非限制性定语从句合并)
→They search for cultural relics and take photos of them, __________.

8 . Try to do something for your mother and it will make her happy.(用非限制性定语从句改写)

9 . 我们可以在网上得到有用的信息，这使我们的学习受益。
(一般表达)We can get the useful information and it benefits our study on the Internet.
(高级表达)　 _______________________________________________   (用which引导非限制性定语从句升级)

10 . That year, she not only won the silver medal in the Australian Open but also won the gold medal in the French Open. They are both world-class tournaments. (改为定语从句)
That year, she not only won the silver medal in the Australian Open but also won the gold medal in the French Open, _________ are both world-class tournaments.