二、把下列句子中的画线部分改写成英语。
1. This English book has 256 pages.
This English book has pages.
2. The Olympic Sports Centre with an area of 896,000 square metres is large enough to hold 6,700 people at
the same time.
The Olympic Sports Centre with an area of square metres is large
enough to hold people at the same time.
3. There are more than 8,000,000,000 people in the world.
There are more than people in the world.
4. The students use about 10,320 tons of water every year in this school.
The students use about tons of water every year in this school.
5. Our earth may hold about 1,386,000,000 cubic kilometres of water.
Our earth may hold about cubic kilometres of water.

1. two hundred and fifty-six
2. eight hundred and ninety-six thousand；six thousand seven hundred
3. eight billion
4. ten thousand three hundred and twenty
5. one billion three hundred and eighty-six million

本题考查英语基数词的表达，三位数的表达结构为“百位数字+hundred+and+十位-个位数字”；对于较大的数字，需从右往左每三位为一个单位，依次用thousand（千）、million（百万）、billion（十亿）来拆分表达。

三、根据所提供的图画情景和提示词，为每张图画写一个对应的祈使句。
1.


2.
3.
4.

5.

1. Don't pick flowers.
2. Turn off the tap.
3. Don't park here.
4. Put the rubbish into the bin.
5. Don't smoke.

本题考查祈使句的运用，祈使句分为肯定形式（动词原形开头）和否定形式（Don't+动词原形），需结合图片情景来写出符合要求的祈使句。

四、句型转换，每空一词。
1. You must be careful when you go across the street. (改为祈使句)
when you go across the street.
2. You mustn't play football on the street. (改为祈使句)
football on the street.
3. You should come to school on time every day. (改为祈使句)
school on time every day.
4. You shouldn't talk in class. (改为祈使句)
in class.
5. Can I help you with English? (改为以Let开头的祈使句)
help you with English.

1. Be careful
2. Don't play
3. Come to
4. Don't talk
5. Let me

祈使句分为肯定形式和否定形式，肯定祈使句以动词原形开头；否定祈使句在动词原形前加"Don't"；以Let开头的祈使句结构为"Let + 人称代词宾格 + 动词原形"。据此完成转换：
1. 原句为肯定提醒，转换为肯定祈使句；
2. 原句为否定禁止，转换为否定祈使句；
3. 原句为肯定建议，转换为肯定祈使句；
4. 原句为否定建议，转换为否定祈使句；
5. 原句表请求帮助，转换为Let开头的祈使句。