1.be/get_caught_in 　　突然遭遇(风暴等)

2.cut_down 砍倒

3.dig_up 挖出

4.wake_up_to 醒来面对；意识到；

认识到

5.prevent_sb._from_doing_sth. 阻止某人做某事

6.as_a_result_of/because_of 因为，由于

7.in_this_situation 在这种情况下

8.one_after_another 一个接一个地 1.a major disaster 　　　一个主要灾难

2.solve this problem 解决这个问题

3.a mass campaign 一场大规模的运动

4.strong enough 足够强

5.as a child 作为一个孩子，小时候

6.the most frightening and the most dangerous situation

最可怕、最危险的境况

7.because of climate changes 因为气候变化

8.to prevent it coming nearer 为阻止它逼近 　　三、这样记句式

先背熟 再悟通 后仿用 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......"。 My clock rings so_loudly_that it will certainly wake me up.

我的闹钟如此响，以至于它肯定会叫醒我的。 2.Sandstorms in China appear to have increased in recent years as a result of "desertification"．

"沙漠化"导致的沙尘暴近几年在中国似乎有所增加。 appear to have done表示"似乎做了"，表示动作的完成。 Do let your mother know all the truth; she appears_to_have_been_told everything.

千万要让你母亲知道所有的真相，她似乎已经被告知了一切。 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。 My sister made_it_a_rule_to

get_up early.

我妹妹把早起作为一个规定。 4.To prevent it coming nearer, the government is planting trees.

为阻止沙漠的逼近，政府正在植树。 不定式作目的状语。 I go to his house every day to_help_him_with_his_English.

我每天去他家帮助他学习英语。