我给作文开个头：If Chinese became the world language, other languages, including English, would soon disappear.

然后，网友发挥想象，把可能发生的事儿都写进去。包括用上以下词语：

suggust

wish

as if

for fear that

in case

lest

It is high time that

if only

but for

otherwise

同时，把表示过去时间的虚拟也加进去。例如：

If Chinese had became the world language a century earlier, the world would have turned into a community of common destiny for all mankind. 如果汉语早一个世纪成为世界语言，世界就已经成为了人类命运共同体。

总之，如果做到了以上要求，且语句连贯，没有语法错误，这篇作文就是不错的。