by themselves

• adv. 单独(独力地)

by themselves的用法和样例：

例句

1. They couldn't, even if they would, get out of trouble by themselves.
   即使他们想(摆脱), 也无法独立摆脱困难。
2. When you walk into the room, the lights turn on by themselves.
   每当你走入这房间，电灯自己就打开。
3. They went to Suao by themselves.
   他们自己去苏澳。
4. The children seem to be totally incapable of working quietly by themselves.
   这些孩子似乎完全不能安静地自己做功课。
5. They finished the work by themselves.
   他们自己完成了这项工作。
6. John and Mary were by themselves.
   约翰和玛丽两人单独在一个地方。
7. Do they live all by themselves in that big house?
   他们是不是单独住在那座大房子里？