请问为什么是i'm looking forward very much to doing sth,而不是 i'm very looking forward to dong sth

请问为什么是i'm looking forward very much to doing sth,而不是 i'm very looking forward to dong sth

因为very作为副词时只能修饰形容词,如he runs very fast,she is very beautiful而very much则是修饰动词,如I like chocolate very much,此处修饰的是like,多读几遍你就会清楚^-^