本文选自由吴应时和何景霖共同编著的《应景新概念英语3》，是学习新概念英语第三册的辅助学习笔记，提供知识点精讲及解析，是学习者的良师益友。

第一段词汇解析

①boulders = large stones or rocks。

②perturbed = worried。

③underestimated = guessed that difficulties were not as bad as they really were。

第二段词汇解析

①bumped = moved along in an uneven way。

②swerved = moved quickly in one direction, then in another。

③hammered = hit repeatedly。

④ominously = as if giving a warning that something unpleasant is going to happen。

第三段词汇解析

①what a relief it was，是感叹句，一般是 what+a/an+adj.+单数可数名词+主语+谓语，当然，也可以接复数名词和不可数名词，但是 how 引导则只能接单数名词，不能接复数名词和不可数名词。当单数时可互换， How interesting a story it is!=What an interesting story it is!特别注意语序。

②in response to，作为……的回应。

Notes 学习笔记

词组归纳

1.get sb. to drive

2.come from

3.even though

4.be pitted with

5.no sense of danger

6.no matter what

7.scoop up

8.sooner or later

9.petrol tank

10.look back

11.a trail of

12.give way to a stretch of

13.in response to

14.get out

15.in the car

16.have no effect

17.go into a low gear

18.at a terrifying speed

19.be back

20.charge at

21.in the middle

22.come to a grinding halt