I will work hard to make my dream come true.
I hope your dream will come true one day.
It takes sb. +时间+to do
spend（某种人称时态）+时间/钱+on sth./ (in) doing sth.
Its important/necessary/useful/useless/common(for sb.) to v
Its nice/kind of sb. to v..
Its time for sb. to do sth.
Its a waste of time to
Its years/days since sb. +ved
Its great fun to do=sb. have great fun doing
Its a pity that
Its an honor to
Im/Were not allowed to
Im afraid of making mistakes
There be doing
Great changes have taken place in
sth is/are well worth v-ing.
It seems/seemed that
It seems (im)possible to v
It is said that
As the saying goes,
and . are different in many ways.
too + adj./adv. to do
There are many differences between and
I have made up my mind to
I am sure that
I am not sure whether/if
I would rather . than
It doesnt matter if
Thank you for v-ing.
If everyone can make a contribution to the earth/ nature/ society, our life will be better and better.