它们的区别是有没有一个定冠词，意义也不一样
in honor of 的意思是为了纪念…，向…表示敬意。
例如：we have built a monument in honor of our heroes who died for the good of our society.
我们建造了一座纪念碑以缅怀那些为人民的利益而牺牲的英雄
in the honor of ：以…的名义。
例如：I am calling for you to protect our campus in the honor of the student Union.
英语中，有定冠词the与没有定冠词the的意义有区别的短语还有
in front of：在…前面
she sits in front of me
她坐在我前面
in the front of：在…前部
the teacher is standing in the front of the class room
老师站在教室前
in charge of ：管理…
he is in charge of the firm
他管理那家商行
in the charge of：在…的管理之下
the firm is in the charge of him
那家商行又他管理
go to school：上学
he went to school on weekdays
他平时去上学
go to the school：去学校
The teacher went to school earlier 老师早早去学校
in honor of 的意思是纪念，向某某表达敬意。in the honor 的意思是以某某的名义。基本上两个短语是有着意义的不同的。
