at front of,at the front of,和in front of,in the front of四者之间有什么区别和联系

at front of,at the front of,和in front of,in the front of四者之间有什么区别和联系
at front of,at the front of,和in front of,in the front of四者之间有什么区别和联系

at front of,at the front of,和in front of,in the front of四者之间有什么区别和联系
in front of在…前面,如：
There is a tree in front of the house.房子前面有一棵树.
He sits in front of me.他坐在我前面.
in the front of 在…前部(在某范围以内)
如：There is a big desk in the front of the classroom.It's for the teacher.
教室的前部有一张大桌子,是老师用的.
(在教室范围里面)
at the front of 在…前部与in the front of同意
at…强调“前部的某一点” in强调在…范围的前部
如：There is a man boating at the front of the boat.船的前部有一个人在划船