1.be caught in 突然遭遇(风暴等)

2.be absorbed/lost/buried in

专心于......

3.be involved in 参与...... 1.prevent sb.(from) doing sth.

2.stop sb.(from) doing sth.

3.keep sb.from doing sth. 　　

背教材原句 记句式结构 仿写促落实 1.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，有时风力大的足以移动沙丘。 "so＋adj./adv.＋that..."表示"如此......以至于......"。 教室如此之吵，班长她不得不提高声音以让同学们听到。

The classroom was so noisy that the monitor had to raise her voice to be heard. 2.Sandstorms in China appear to have increased in recent years as a result of"desertification".

因"荒漠化"越发严重，中国近年来发生沙尘暴的次数明显增加了。 "appear to have done"表示似乎做了......，表示动作的完成。 务必让你母亲知道所有的真相，她似乎已经被告知了一切。

Do let your mother know all the truth; she appears to have been told everything. 3....traffic moves very slowly because the thick dust makes it difficult to see.

......车辆开得很慢，因为浓浓的尘埃降低了能见度。 "make＋形式宾语＋宾补＋真正的宾语"结构，it用作形式宾语。 互联网使得人们可以更容易地获取他们所需要的信息。

The Internet makes it easier for people to get the information they want.