In time, this organization became a state, and knowledge of its functioning was exportable, as were pottery, tropical bird feathers, specialized stone materials, and other local commodities.请教这句话该怎么理解？as是什么用法？
Saba has an exceptional safety record making it one of the most memorable civilian aviation experiences available anywhere in the world.现在分词making引起的短语是record的定语，还是主句谓语的状语，如果判断是状语，那可以确定是那种类型的状语吗？谢谢老...
In the late 1990s, the first web browsers made networks, which had been for science labs and the military, accessible to any of us, giving birth to the modern internet.其中which引导的非限制性定语从句怎么理解呢？
1. It is here that is to be found the source of the energy that the Sun constantly pours out into space as light and heat. 2. In marketing, benefits like advertising impact aren't easily put into dollar returns. 为什么第一句可以用as，第二句却不可以用as代替like?
They made a protest to the authorities that was embarrassing.（夸克，语法大全，18.42）
作者说这句话等于they made a protest to the authorities in a way that was embarrassing.那么原句里边that指代的是整个主句部分？可以这样用吗？
Studying this could help understand why human evolution picked pace in the last 30,000 years, with social environment being a major contributory factor.请问老师，句末由with引导的独立主格结构做伴随状语，为什么不能当定语从句理解？形式是一样的，如何区分？...
According to Cisco, a maker of networking gear, video accounted for 70% of global internet traffic in 2015, a share it thinks will increase to 82% by 2020.请教一下这个句子的结构和句法成分?并列句还是定语从句或同位语？各部分充当什么成分？
原文；so we'll start by going back thousands of years. Most ancient cultures had weather gods, and weather catastrophes, such as floods, played an important role in&nbs...
Have you see ____ umbrella I put here this morning? Is it ___ black one? It is in the cornor of our office.A. the; a B. an; aC. the; the D. an; the答案：A解析： 考察冠词， 第一空后由于有定语从句修饰，表示特指，故用the; 泛指“一把” 黑色的伞...