句型11：the +比较级，the +比较级
he more one has，the more one wants。
句型12： as +adj/ adv+as …not as(so) +adj / adv +as ...
Do you think that art is as important as music?
Last Sunday the weather was not so wet as it is today.
句型13：more/ less +adj+than
I think art is less important than music.
句型14：stop…from doing sth
The Great Green Wall will stop the wind from blowing the earth away。
句型15：both ... and ...
Both you and I are students。
Either you or he is wrong .
句型17：neither ... nor ...
Neither he nor I am a student。
句型18：... as soon as ...
As soon as I see him，I’ll give him the message.
句型19：... so+adj / adv+that ...
I was so tired that I didn’t want to speak。
Though I like writing to my pen-friend，it takes a lot of time.