1. She rocked backwards and forwards on her chair. 她坐在摇椅上前后摇晃着。
2. She was rocking backwards and forwards in her seat. 她在座位上前摇后晃。
3. He moved his head backwards and forwards and flew away. 他扭了扭脑袋，就飞走了。
4. Having got off somewhere in suburbia, the artist walked backwards and forwards over a piece of grass until the squashed turf formed a line-a kind of drawing on the land. 在郊区某个地方下车后，这位艺术家在一片草地上走来走去，直到被压碎的草皮形成一条线——一种在土地上的绘画。
5. Having got off somewhere in suburbia, the artist walked backwards and forwards over a piece of grass until the squashed turf formed a line – a kind of drawing on the land. 在郊区某个地方下车后，这位艺术家在一片草地上走来走去，直到被压碎的草皮形成一条线——一种在土地上的绘画。
