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…
Sb. spend(某种人称时态)+时间/钱+on sth./ (in) doing sth.
It's important/necessary/useful/useless/common…(for sb.) to v…
It's nice/kind of sb. to v..
It's time for sb. to do sth.
It's a waste of time to…
It's …years/days since sb. +ved
It's great fun to do=sb. have great fun doing
It's a pity that…
It's an honor to…
I'm/We're not allowed to …
I'm 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 doesn't 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.