1. Some of them were as big as marbles.
    有的钻石像玻璃球那么大。

2. She was sentimentally attached to this house, for even though it was far too big for her needs,
    她对这幢房子在感情上难舍难分。房子实在太大了，

3. She went into my room and got a big surprise when she saw all those books on the floor.
    她走进我的房间，当她看到地板上的那些书时，大吃一惊。

4. Sally is looking at a big ship.
    莎莉正在观看一艘大船。

5. Suddenly a big bear ran out from behind the tree.
    突然，一只大熊从一棵树后面跑出来。

6. She paused a bit and then went on: "They got me in their big office.
    她稍稍停了一会儿，然后接着说：“他们让我到他们的大办公室去。

7. Sam is now a year and a half old, big enough to cross the playground's bouncy bridge himself.
    山姆现在一岁半了，有能力自己穿过操场上的蹦蹦桥。

8. Public transport is a big problem in this locality.
    公共交通是这个地区的大问题。

9. My grandmother reared a big family.
    我祖母生育了好多孩子。

10. Mrs. Cox teaches English in a high school in San Francisco, a big city on the West Coast of the United States.
    科克斯夫人在旧金山(美国西海岸大城市)的一所中学里教英语。