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。

　　句型21：be going to

　　This afternoon I’m going to buy a Qisu English book. 今天下午我要去买本奇速英语书。