【1】if you compare two ways of life carefully, you will find the former is superior to latter.??解答：第1个句子的从句和主句都使用人(you)作主语，属于主从复合句最普通表达【2】careful comparison?of two ways of life will?show?the superiority over latter.解答：第2个句子属于简单句并使用了Show the superiority over sth=显示出对某物的优势/优越性，属于简单句中高级简洁表达备注(1)：careful comparison of two ways of lie(名词短语）要比compare two ways of life carefully(动词短语)更高级备注(2)：show the superiority over sth(动词短语)要比be superior to sth(形容词短语)更高级【1】if we don't recognize serious the problem of growing population , we will make a big mistake.解答：第1个句子的从句和主句都使用人(we)作主语，属于主从复合句最普通表达【2】Failure to?recognize the seriousness of growing population will?lead to?a big mistake.解答：第2个句子属于简单句并使用了Failure to do sth =没有做某事结构作句子主语，同时使用了lead to sth导致/引起/造成某事属于简单句中高级简洁表达。备注(1):lead to a big mistake要比make a big mistake更高级备注(2): failure to recognize the seriousness?要比don’t recognize the seriousness更高级?以上个人理解，仅供网友参考！