在英文中，球在课桌里的表达方式有几种，具体如下：
The ball is on the desk.
球在课桌上。
The ball is in the desk.
球在课桌里。
The ball is under the desk.
球在课桌下。
The ball is behind the desk.
球在课桌后。
The ball is beside the desk.
球在课桌旁边。
下面是一些英文例句及其中文翻译，希望能帮助你理解：
I saw the ball on the desk when I walked into the room.
我走进房间时看到球在课桌上。
Can you reach the ball under the desk for me?
你能帮我把球从课桌下拿出来吗？
The ball rolled behind the desk when I kicked it.
我踢了一脚球，它滚到了课桌后面。
I left the ball beside the desk because I didn't want to lose it.
我把球放在了课桌旁边，因为我不想把它丢了。
希望以上内容能帮助你。
The ball is on the desk.
球在课桌上。
The ball is in the desk.
球在课桌里。
The ball is under the desk.
球在课桌下。
The ball is behind the desk.
球在课桌后。
The ball is beside the desk.
球在课桌旁边。
下面是一些英文例句及其中文翻译，希望能帮助你理解：
I saw the ball on the desk when I walked into the room.
我走进房间时看到球在课桌上。
Can you reach the ball under the desk for me?
你能帮我把球从课桌下拿出来吗？
The ball rolled behind the desk when I kicked it.
我踢了一脚球，它滚到了课桌后面。
I left the ball beside the desk because I didn't want to lose it.
我把球放在了课桌旁边，因为我不想把它丢了。
希望以上内容能帮助你。