重点词汇

1．It lasted for ten hours and was very frightening.

它(这场沙尘暴)持续了十个小时，非常可怕。

(1)frightening adj.令人害怕的，吓人的

(2)frightened adj.害怕的

be frightened of/at/that...害怕......

be frightened to do sth.害怕去做某事

(3)frighten vt.使害怕

frighten sb.away吓走某人

frighten sb.to death把某人吓得要死

frighten sb.into doing sth.恐吓某人做某事

frighten sb.out of doing sth.恐吓某人使其不敢做某事

注意：frightened，shocked，surprised，amazed等由过去分词转化而来的形容词多用于说明人自身的感受，还可以修饰voice，expression，smile，look等可以表示人的心理活动的词。frightening，shocking，surprising，amazing等由现在分词转化而来的形容词多用于说明事物自身的属性。

(1)He drove at a speed which frightened Lucy to death.

他开车的速度把露西吓得要死。

(2)The boy was too frightened to speak.

那男孩吓得不敢说话。

(3)From her frightened look we knew that she was frightened of the frightening scene.

从她惊恐的表情中，我们知道她对那可怕的场面感到害怕。

(4)They frightened the old lady into signing the paper.他们恐吓那位老太太签了字据。

[单句改错]

(5)I had a experience while I was walking in the field.

2．Deserts are also created because people cut down trees and dig up grass.