Translation:
1 我们学校坐落于一座山脚下。
Our school lies at the foot of a mountain. 2 每天这些化工厂排出大量的废水和有毒气体。
Every day the chemical works produces a lot of waste water and harmful gases. 3 老师昨天告诉我们，光比声传播快。
Yesterday our teacher told us that light travels faster than sound. 4 我们明天考试。
we are to take an exam tomorrow. 5 他在做实验，30分钟后才能完成。
He is doing an experiment. He will finish it in 30 minutes. 6 她正在思考某些东西，就在此时她的同事走了进来。
She was considering something when her workmate came in. 7 他们总是乐于助人。
They are always helping others willingly. 8 她一边看电视一边织毛衣。
She was watching TV while / as she was weaving a wool. 9 我姐姐自从大学毕业以来，一直在这个公司工作。
My elder sister has been working in this company since she graduated from university. 10 他昨天说他们下周举行运动会。
Yesterday he said they were going to have a sports meeting. 11 这些产品是我们工厂生产的。
These products are made in our factory. 12 已经采取了很多措施来防止污染。
Many measures have been taken to prevent pollution. 13 正在使用的课本是由他们出版社印刷的。
The textbooks that are being used are published by their publishing house. 14 刚才他说，大量的工作已完成了。
Just now he said a lot of work had been finished.
6
基础写作：我非常喜欢旅游，到目前为止，我去过很多地方，去年，我和我的父母去了云南。我们参观了昆明，大理和丽江。我们真的玩得很开心。现在，我在海南，我在海里游泳，我真的非常享受。明年暑假我打算和父母一起去北京参观，我相信我们会玩得很开心的。 ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________
I like traveling very much. I have been to many places so far. Last year, I went to Yunnan with my parents. We visited Kunming, Dali and Li Jiang. We really had a good time. Now I am in Hainan. I am swimming in the sea and I enjoy myself very much. Next summer vacation I am going to visit Beijing with my parents. I am sure we'll have a great time there. ?
7