句型9：... not ... until ...

　　He didn’t have supper until his parents came back.

　　直到他的父母回来他才吃饭。

　　句型10：比较级＋and＋比较级

　　The baby cried harder and harder.

　　那孩子哭得越来越厉害。（www.Xsc.cn）

　　句型11：the ＋比较级，the ＋比较级

　　The more one has，the more one wants.

　　越有越贪。

　　句型12：... as ＋adj./ adv.＋as ...

　　…not as(so) ＋adj. / adv. ＋as ...

　　Do you think that art is as important as music？

　　你认为艺术和音乐一样重要吗？

　　Last Sunday the weather was not so wet as it is today.

　　上个星期天的天气不如今天的天气潮湿。

　　句型13：more/ less ＋adj.＋than...

　　I think art is less important than music.

　　我认为艺术不如音乐重要。

　　句型14：stop…from doing sth.

　　The Great Green Wall will stop the wind from blowing the earth away.

　　绿色长城将阻挡风吹走土壤。

　　句型15：both ... and ...

　　Both you and I are students.

　　我和你都是学生。

　　句型16：either ... or...

　　Either you or he is wrong .

　　不是你错就是他错。