today is travelling of three people 这句话有语法错误吗

today is travelling of three people 这句话有语法错误吗 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 Though in those days,travelling was not as easy as it is today,steam boats carried thousands...（1）其中travelling was not as easy as it is today,在整句话中做什么成份?（2）as easy as it is又做什么成分?（3）travelling为什么 travelling travelling travelling travelling today more people are travelling than ever bofore.why is this case what are the benefits of travelling for the traveller?请问这条作文是说什么的啊?应该怎样写啊? today more people are travelling than ever bofore.why is this case what are the benefits of travelling for the traveller?请问这条作文是说什么的啊?应该怎样写啊? Travelling by train is more relaxing than___. 翻译：modern life is possible for travelling Travelling by plane is very fast. But travelling by train is quite d_____. A spaceship is travelling through space. as……as比较级省略问题though in those days travelling is not as easy as it is today 这里的is能够省略吗,为什么有的能省略,lucy is asgood student as jack today is today is today today is OK Today my family spent three hours in travelling today.改为一般疑问句_____ your family ______ three hours in travelling today?Today my family spent three hours in travelling.(改为一般疑问句）