1．[教材原句]How come?

　　怎么会呢？(表示惊讶)

　　[句型点拨]How come ..."为什么，怎么会(那样)"。

　　[佳句赏析]她怎么会输了这场比赛呢？

　　How come she lost the match?

　　2．[教材原句]The Bai prefer the colour white, and Bai women wear white and red costumes, while the men wear white shirts and long wide trousers.

　　白族人喜欢白色，妇女穿红白相间的服装，而男士则穿白衬衫和宽松的长裤。

　　[句型点拨]while表示对比。

　　[佳句赏析]他喜欢运动，而我喜欢看书。

　　He likes sports, while I like books.

　　3．[教材原句]It is generally agreed that Native Americans came across from Asia, somewhere between 12，000 and 25，000 years.

　　人们普遍认为美洲土著居民来自大约12 000到25 000年以前的亚洲的某个地区。

　　[句型点拨]It is generally agreed that ... "人们普遍认为......"。

　　[佳句赏析]人们普遍认为吸烟有害健康，但他们中却很少有人真正地戒烟。

　　It is generally agreed that smoking is bad for health, but few of them quit it for real.

　　Reading and Vocabulary (2)

　　The Bai Ethnic Group

The Bai ethnic group has a population of around two million, 90% of whom live in Yunnan. Their native region is the Erhai region of Yunnan, and its main city is Dali. The Bai have their own dialect, which resembles Chinese; however, Chinese is mostly spoken today. The Bai have an agricultural economy, their main crops being rice, wheat, beans and cotton. Their staple foods are pork, rice and wheat. The Bai have a tradition of building houses as a community, usually beginning on a festival day. The houses are in the style of traditional Chinese architecture. They also build halls known as Yunhe halls, which can hold about 200 people and are used as community centres.