7．Before long, the noise dropped completely…
没过多久，噪音便彻底消失……

drop在这里为不及物动词，表示“减少”、“变弱”或“消失”：

When he saw that Mary was annoyed, his voice dropped.

他发现玛丽生气时，便降低了嗓门。

We had to stay at home before the wind had dropped.

风力减弱以前，我们不得不呆在家里。

词汇学习 Word study

1．swing vt. , vi.

（1）（使……）摆动/摇动：

He can't stand those who swing their legs while eating.

他受不了吃东西时晃腿的那些人。

She tried to swing the baby to sleep.

她试图把孩子摇得睡着。

（2）突然转向，使……转向/转身：

The man tried to swing the speedboat round.

那人试图让快艇转弯。

He swung round and looked at the two men.

他突然掉转身，看着那两个人。

2．enough与fairly

enough表示“足够”，用在形容词或副词之后，有“为了某种目的”的含义；fairly表示“相当”，通常修饰表示肯定意义的词：

I'm old enough to know what I'm doing.

我已经大了，知道自己在干什么。

We haven't got enough time/chairs.

我们没有足够的时间/椅子。

I didn't arrive at the station early enough.

我到车站到得不够早。（我误了火车。enough指结果）

They had just had enough time to swim out of danger.

他们刚刚来得及游出危险区。（enough既可用于名词前，也可用于名词后）

The water in the pool is fairly warm, but not warm enough to swim in.

池里的水相当暖和，但如要游泳则还不够暖。

He is fairly quick, but not quick enough to take part in the race.

他跑得相当快，但要参加比赛还不够快。

练习答案 Key to written exercises

1．关键句型练习答案

A What happened: tried (1.1); came away (1.2); waved (1.2); were thrown (11.4-5); continued to move (1.6); noticed (1.7); came straight towards (11.8-9); roared past (1.9); swam on (1.10); knew (1.10); completed (1.11);dropped (1.13); began to drift (1.13)

What had happened: had hardly had (1.4); had struck (1.5); had just begun (11.6-7); had passed (1.10); had just had (1.11); had slowed down (1.12); had nearly all been used up (1.12)

What had been happening: had been water skiing (1.4)

2．难点练习答案

1 fairly…enough  2 fairly  3 enough  4 enough  5 enough

3．多项选择题答案

1b  2c  3a  4b  5b  6b

7d  8c  9a  10b  11b  12c

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