in front of, in the front of

　　in front of的意思是“在……前面”。

　　如:

　　There is a tree in front of the house.

　　房子前面有一棵树。

　　in the front of的意思是“在……前部”,指在某个空间范围内的前面。

　　如:There is a blackboard in the front of the classroom.

　　教室里前部有一块黑板