There is a blackboard in front of the classroom.(改错)
问题描述:
There is a blackboard in front of the classroom.(改错)
答
There is a blackboard at the front of the classroom.
答
in the front
答
There is a blackboard in the front of the classroom
答
in the front of 要加the 因为是在教室里
如果是一棵树在教室外就不用the