teacher's office和teachers'office的区别
teachers office说的是老师的办公室，强调的是一个老师；
teachersoffice是老师们的办公室，说的是所有老师。
Are you afraid to go to the teacher\'s office?
你不敢到老师办公室去吗？
I saw her go into the teacher\'s office.
我看见她进老师办公室的。
We bought some office equipment for the teachers\'office.
我们给老师办公室买了些办公设备。
My classroom is next to the teachers\'office.
我的.教室挨着老师的办公室。