主系表结构
翻译练习：
1.我的兄弟都是大学生。

2.冬季白天短，夜晚长。

3.布朗夫人看起来很健康。

4.十五岁他就成为有名的钢琴家了。

5.孩子们，请保持安静。

6.这本书是有关美国历史的书。

7.她的工作是在幼儿园里照看儿童。

8.他失业了。

9.树叶已经变黄了。

10.这个报告听起来很有意思。

参考答案：
1.My brothers are all college students.
2.In winter, the days are short and the nights are long.
3.Mrs Brown looks very healthy.
4.At the age of fifteen he became a famous pianist.
5.Children, keep quiet please.
6.This book is about the history of the United States.
7.Her job is to look after the children in the nursery.
8.He is out of work.
9.The leaves have turned yellow.
10.The report sounds interesting.。