1、on the second floor__________在二楼
2/on the ground floor___________在一楼
3/half an hour___________半个小时
4/wait for the green man___________等待穿绿色衣服的人
5/run across the rosd____________跑过马路
6/rurn right________右转
7/talk loudly_______大声讲话
8/a pair of_________一双
9/plenty of_______许多
10/as healthy as___________像...一样健康
11/as tall as___________像...一样高
12/get to_____________到达
13/after that___________在...之后
14/for the first time____________第一次
15/in a classroom______________在教室里
16/in a library____________在图书馆里