It's adj. +for sb. to do sth.做某事对某人来说…
Nowadays,…play an important role in people's daily life.
如今…在人们日常生活中起着重要作用
There is no doubt that...毫无疑问…
The reason why ...is that...…的原因是…
If...,I will.... 如果… 我将要…(主将从现)
with the development of... …随着…的发展
sb.have fun /trouble/difficulty doing sth.
做某事很开森/有困难