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。

　　句型17：neither ... nor ...Neither he nor I am a student. 我和他都不是学生。

　　句型18：... as soon as ...As soon as I see him，I’ll give him the message. 我一见到他，我就把你的消息告诉他。

　　句型19：... so＋adj. / adv.＋that ...I was so tired that I didn’t want to speak. 我累得连话也不想说了。

　　句型20：Though...＋主句Though I like writing to my pen-friend，it takes a lot of time. 虽然我喜欢给笔友写信，但它要耗费我大量时间。