fast, quickly. soon在中文中都可以翻译成“快”，但含义各不相同，在使用中需多加注意，以免误用。

◇课本例句：

I want to play basketball, but I cannot run fast. (7A 60)

He can learn things quickly. (7B 89)

We look forward to hearing from you soon. (7B 89)

Justin and Paul jump out of the van and run away quickly. (7B 44)

◇词典例句：

The crops are growing fast. 庄稼正长得很快。

She speaks very fast. 她说得很快。

They quickly finished the supper. 他们匆匆吃了晚饭。

He will be back soon. 他不久就会回来。

A train is much faster than a bus. 火车比公共汽车快得多。

He is fast enough to catch the early bus. 他走得快，能赶上早班车。

相关练习：

1.         Kids grow up so _______ these days.

2.         The car was going pretty _________ when it went off the road.

3.         Don’t eat too _________.

4.         He speaks ________.

5.         Come here ________!

6.         It will be getting dark ________.

7.         Something has to be done about this _________.

8.         We drove as ________ as we could to the hospital.

9.         I can’t run very ________.

10.     We ________ realized how difficult the job was going to be.

11.     How _______ can you finish the report?

12.     I’ll come over to your place as _______ as I can.

13.     She went ________ out of the room.

14.     We have to work _________.

15.     We got there as _______ as we could.

16.     Can’t you run any ________ than that?

17.     He’ll be here very ________.

18.     My watch is three minutes _______.

Keys:

1.         Kids grow up so fast these days.

2.         The car was going pretty fast when it went off the road.

3.         Don’t eat too quickly.

4.         He speaks fast.

5.         Come here quickly!

6.         It will be getting dark soon.

7.         Something has to be done about this quickly.

8.         We drove as fast as we could to the hospital.

9.         I can’t run very fast.

10.     We soon realized how difficult the job was going to be.

11.     How soon can you finish the report?

12.     I’ll come over to your place as soon as I can.

13.     She went quickly out of the room.

14.     We have to work quickly.

15.     We got there as fast as we could.

16.     Can’t you run any faster than that?

17.     He’ll be here very soon.

18.     My watch is three minutes fast.