1.正如科学家所预言的那样.全球污染成了人类面临的最严重的问题之一。(global）  方式状从(as…said)  global pollution Face        one of…

As is predicted by  scientists,global pollution is one of the most severe troubles that man faces .

2、谋求这些职位的竞争很激烈——今年的求职者（applicant)是去年的5倍.

Because the number of applicants is five times as many  as  that last year, so the competition of seeking these positions is fierce.

3.正如事实表明的那样，教育大纲应当符合国家的经济发展计划。(fit into)as… (方式状从） fit into

As the facts show, educational program should fit into national plan for economic development.

4.这辆汽车太费油(burn too much gas),而且价钱几乎是我想付的两倍。

The car burns too much gas, moreover, the price is approximately twice as that I want to pay.

5.要了解一起国际事件. 我们首先要考虑其历史与政治背景（background)目的状语In order to understand a major international event, we should consider its history and politics background.