比较分句的倒装是选择性的,不是必须的。倒装的目的有二个,第一,为了突出强调主语;第二,主句太长,避免头重脚轻。所以你的三个句子中,倒装或不倒装都可以,但信息的侧重点略有不同,句末为信息中心。你还可以在本网搜索阅读比较分句的倒装。
This 300-kilometre stretch of raging rapids is as much a barrier to life as are the mountains above. 绵延三百公里的急流如同那些巍峨群山,成为了保护野生生命的天然屏障。(这里as后面的are 可以放到最后吗?即as the mountains above are)…
再比如He wished to be such a man as Lei Feng was.(这里可以写成as was LeiFeng吗)
He began his own business as did his friends.(这里可以写成as his friends did吗)