表示运动方向的介词
(1)into, inside , in 从外到内 如：
He went quickly into / inside the room.
He went quickly into / inside the room.
(2)out of 从里到外，相当于outside, 或从里向外,相当于from
She went out of from the office in a hurry 她匆匆走出办公室.
The boy watched the buses, cars and bikes out from the window .
这男孩透过窗观看外面的公交车、小汽车和自行车。
(3)on 在表面，onto 到上
A boat is on the river. 一条小船在河上。
He jumped onto a tree. 他跳上一棵树
(4)across 穿过一平面、through 穿过一空间
The boy kicked the ball hard and it moved across the grass.
这男孩用力踢球，球飞过草地。
The train moved fast through the tunnel. 火车飞驶隧道。
(5)The train moved fast through the tunnel. 火车飞驶隧道。
She walked to the bank 她步行到银行去
She swam towards the shore 她朝岸边游去。