1.It's + 形容词+ for sb.to do sth.对于某人做某事..
如：It's important for us to read English every day.
2.too+形容词 + to do sth.太...而不能
如：He is too young to go to school.
3.keep + 形容词：
We should keep our classroom clean and tidy.
4 make + 形容词
He can make his class interesting.
5.so + 形容词 + that
It is so late that we have to go home.
只想起来这么多
