为什么it is not easy being a teenager,用being 而不用to be a teenager?

为什么it is not easy being a teenager,用being 而不用to be a teenager? Being in love is easy,being married is not.It is to be cherished. Being in love is easy,being married is not.It is to be cherished. It's not easy to be everybody! he found it not easy to sleep为什么这里it后的be 动词省略了 为什么是It is easy to understand而不是It is easy to be understand为什么这里不用被动呢? 1.it is not easy to be systematic and objective about language study.这句话的主语是什么?it is not easy 的用法是什么? life is not easy and it will never be翻译成汉语是什么意思? Although shopping online is fast and easy ,you 'd better ______(not be) crazy about it . 为什么It is not easy for us ----(study )English为什么It is not easy for us ----(study )English ---中填to study it is not alwasy easy for the public to see what use a New invention can be of to human life宾语为什么不选which 英语翻译翻译It is very easy to laugh at her,but it is not as easy to be as brave as she Though in those days,travelling was not as easy as it is today.这里的为什么加上it is,它是什么成分 直接 ...not as easy as today it is not that easy 中文是什么?it is not that easy 中文是什么? I knowing it is not easy?还是I know it is not easy? Being in love is easy,being married is not.It is to be cherished.什麼意思? It is really no easy task to forgive.为什么用no?不是not? To be a man is not easy,it's very difficult!living naturally is more difficult什么意思