有关 the more the more 的一个句型,

题目

有关 the more the more 的一个句型,
the larger the terrain used to support a group,the harder it is to exploit that terrain while remaining in one place.
我不懂得是 如果按照意思 ,应该是 土地被用来支持一个group的越大,.
应该是 the larger the terrain is used to support a group
为什么这里没有be 动词呢?
the more the more 的句型到底是怎么用?
帮忙把这个句子的结构分析下
不要用软件翻译该句子，发现就举报

答案

it's also ok to put 'is' in it,but the meaning will be changed somehow.
without 'is','used to' means something in the past,like i used to drink coffee.
if you have is there,then it will be just what you said:ge
you can try this:
the more you read,the more you know
=
if you read more,you will know more.
or:
if the terrain used to support a larger group,it will be harder to exploit that terrain while remaining in one place.
good luck!
used to 单独是一个短语,表示曾今,或者习惯于做什么.所以没问题.
至于你说的加上BE动词,be used to就表示被用于干嘛,也行.
而THE MORE...,THE MORE.表示越是什么,就会越是什么.
所以翻译就是：
一块土地越是曾今被用来支持更大的族群,就越难被开发而同时保持在一个地方