1.It is important that We protect our nature/It is important for us to protect our nature
2.It is necessary that We always give a hand to disabled peope
It is necessary for us to give a hand to disabled peope
3.It is meaningful that He will join in the voluntary work
It is meaningful for him to join in the voluntary work
4.It is wrong that children don't look after the old
.It is wrong for children not to look after the old
5.It is exceting that I will play a role in zhang yimou's film
It is exceting for me to play a role in zhang yimou's film