Question

为什么on the way home的home前不加to？

Answer 1

因为有事home也当做副词用，所以前面就不用加to了。

to       英 [tə] 美 [tu,tə]              .到、向、朝着、关于、属于。

除下列用法外，to 还可用于 see to 和 come to 等短语动词中。它还与某些带双宾语的动词连用，以引出第二个宾语。

例句

1. Two friends and I drove to Florida during college spring break  .
   

   译文：我和两个朋友在大学春假期间开车去了佛罗里达。

2. We went to a party at the leisure centre  .

   译文：我们去休闲中心参加一个聚会。  

3. here was a piece of cloth tied to the dog's colla.

   译文：狗项圈上系着一条布。

4. Hemingway's studio is to the right.

   译文：海明威的工作室在右面。  

5. He picked up the knife and gave it to me  .

   译文：他捡起刀子递给我。  

6. Marcus has been most unkind to me today.

   译文：马库斯今天对我非常无礼。  

7. He is a witty man, and an inspiration to all of us  .

   译文：他机智风趣，鼓舞激励着我们所有人。  

Answer 2

因为在这里way home指的是回家旅途，如果要加to 的话，还要加个back

Answer 3

home是介词to也是介词不能用在一起的。望采纳

追问

home什么时候变成介词啦？

追答

不好意思说错了在这里是副词 副词前不能加介词

追问

嗯，谢谢

Answer 4

举个例子，就像go home 和go to school，home前没有to 。

Answer 5

The word home may be not only a noun, but also an adverb, an adjective and even a verb (The Free Dictionary). In your example, on my way home, home is an adverb meaning the direction, in which someone/something is headed, i.e. towards a location, they call home.
Home certainly can be used with preposition towards (not sure if it can be used with to) but usually people tend to omit unnecessary words in speech. Thus on my way home is the most common form.