1．[教材原句]Which do you think is more dangerous, an earthquake or a sandstorm?

　　你认为地震和沙尘暴哪一个更危险？

　　[句型点拨]疑问词＋ do you think/believe/suppose ＋其他。

　　[佳句赏析]你认为什么方法最有效？

　　What do you think is the most effective way?

　　2．[教材原句]They are often so thick that you cannot see the sun, and the wind is sometimes strong enough to move sand dunes.

　　沙尘暴常常很浓密，以至于遮住了太阳，有时风力大得足以移动沙丘。

　　[句型点拨]so ... that ..."如此......以至于......"。

　　[佳句赏析]当班长在全班同学面前讲话时，教室如此之吵，她不得不提高声音以让同学们听到。

　　When the monitor spoke in front of the class, the classroom was so noisy that she had to raise her voice to be heard.

　　3．[教材原句]The storms sometimes continue all day and traffic moves very slowly because the thick dust makes it difficult to see.

　　这种沙尘暴有时持续一整天，车辆开得很慢，因为浓浓的尘埃降低了能见度。

　　[句型点拨]make it ＋形容词＋to do ...，it作形式宾语，动词不定式作真正的宾语，形容词作宾补。

　　[佳句赏析]这场大雪使得他们不能按时到达那儿。

　　The heavy snow made it impossible for them to get there on time.

　　1．It lasted for ten hours and was very frightening. (P31)

　　它(这场沙尘暴)持续了十个小时，非常可怕。

　　★frightening adj.令人害怕的，吓人的

　　①It is frightening even to think of the horrors of nuclear war.

　　核战争的恐怖状况连想都不敢想。

　　(1)frighten v．　　　　　使惊吓；害怕

　　frighten sb./sth. away/off 把某人(物)吓走

　　frighten sb. into/out of doing sth.

　　 吓唬某人做/不做某事

　　(2)frightened adj. 惊吓的；害怕的

be frightened of/at ... 害怕......