17.sth is the second +最高级+n.  …是第二…

　　黄河是中国第二大长河。

　　The Yellow River is the second longest river in China.

　　18.too…to…  太…而不能…

　　他跑地太快我追不是她。

　　He ran too fast for me to catch up with.

　　19.thank sb. for sth./ doing sth.   谢谢某人某事 / 做某事

　　谢谢你给我寄来的全家福。

　　Thanks for sending me the photo of your family.

　　20.sth looks like…/ sth. sounds like …  …看起来像 / 听起来像…it seems that… 似乎，好像

　　那听起来像是个好主意。

　　That sounds （ like） a good idea.

　　似乎她去过美国。

　　It seems that she has ever been to the States.

　　21.prefer sth / doing sth. to sth / doing sth.   和…相比更喜欢…和咖啡相比，我更喜欢喝茶。

　　I prefer tea to coffee.

　　= I prefer drinking tea to drinking coffee.

　　22.The +比较级…, the +比较级…, 越…就越…

　　---你期待我何时回来？---越快越会。

　　---When do you expect I’ll be back?

　　---The sooner, the better.

　　树种的越多，沙尘暴就越少。

　　The more trees we plant, the fewer sandstorms we will have.

　　23.There is sth. wrong with… = sth is wrong with sth. 某物出问题了/有毛病了

　　他说这台机器出问题了。

　　He said something was wrong with the machine.

　　=He said there was something wrong with the machine.

　　24.What’s wrong / the matter with…? …怎么了？

　　他的自行车怎么了？

　　What’s wrong/ the matter with his bike?

　　25.What about / How about + doing/ + sth.…?   …怎么样？

　　既然你没事做，今天晚上和我一起去看电影怎么样？

　　What about going to the movie with me tonight as you have nothing to do?