It(主语) extends(谓语) from placeA(状语) all the way(状语) down to placeB(状语）.

参考译文：它从A地方一直延伸到B地方

(1)down这是副词，表示从高向低轨迹移动

(2)all the way表示一直，作时间状语

(3)you make it not that way中the that way作方式状语相当于in that way，因此不能加介词in

A:all the way 一路上，一直，始终

The walk from the village to Greystones was uphill all the way.  

从村子到格雷斯通斯走的一直都是上坡路。

We got there by driving slow all the way.  

我们开着车去了那里，一路上开得很慢。

B：in that way用那种方式，作方式状语

We shouldn't use the police in that way. It's just not on.  

我们不该那样动用警力，那根本不可接受。

You are asking for trouble when you behave in that way.  

你那种行为是自找苦吃.

In that way one is sure of accepting no humbug.  

如是一人必不至被骗.