爱华网课文详注 Further notes on the text
1．play with, 玩……（东西）。
The children are playing with a toy car in the garden. 孩子们正在花园玩一辆玩具汽车。
2．make a noise, 搞出声响。
noise是抽象名词。抽象名词是不可数的，前面加不定冠词a并不意味1、2、3、4等数目，只是赋予那个名词具体的含义，如一次、一种、一例、一番等。又如：
have a rest 休息一下
take a look at… 看一眼……
3．lean out of the window, 把身子探出窗外。
out of是介词短语，与 in或 into相对，表示“离开”、“脱离”。
语法 Grammar in use
禁令：don't与mustn't都可用来表示禁令。用mustn't表示“禁止”或“不许可”，语气比较强烈。
词汇学习 Word study
1．keep v.
（1）使保持某状态；保持：
Keep the room warm. 使房间保持温暖。
Keep the fire burning. 不要让火熄灭了。
（2）保存；保留：
He would not be able to keep his job. 他恐怕保不住他那份工作了。
If you like it, just keep it. 你如果喜欢的话，那把它留下来吧。
（3）保守；储藏：
Please keep this secret. 请保守这一秘密。
Would you keep my things for me while I'm away? 在我离开的这段时间里，你能为我保管一下东西吗？
2．remain v.
（1）留下；停留：
You'd better remain at home. 你最好留在家里。
We're going to remain in Rome for another two days. 我们准备再在罗马逗留两天。
（2）保持不变：
It will remain cold for a couple of days. 天气还将持续冷几天。
Most people remained silent at the meeting. 多数人在会上保持沉默。
练习答案 Key to written exercises
Lesson 64
A
1 Jimmy is better now but he mustn't get up yet.
2 Jimmy has a cold and he must stay in bed.
3 Jimmy can get up for two hours each day.
4 Jimmy often reads in bed.
5 Jimmy listens to the stereo, too.
6 Jimmy doesn't feel ill now.
B
1 Don't take any aspirins!
You mustn't take any aspirins!
2 Don't take this medicine!
You mustn't take this medicine!
3 Don't call the doctor!
You mustn't call the doctor!
4 Don't play with matches!
You mustn't play with matches!
5 Don't talk in the library!
You mustn't talk in the library!
6 Don't make a noise!
You mustn't make a noise!
7 Don't drive so quickly!
You mustn't drive so quickly!
8 Don't lean out of the window!
You mustn't lean out of the window!
9 Don't break that vase!
You mustn't break that vase!
