内容正文:
五年级上册暑假自学课(join in外研剑桥)
Unit 3 The Ends of the Earth
单元知识整合
一、必会词汇
Arctic 北极
Antarctic 南极
polar bear 北极熊
penguin 企鹅
earth 地球
ice 冰
holiday 假日;假期
fishing 钓鱼
wonderful 极好的
igloo 冰屋
whale 鲸
danger 危险
disappear 消失
lose 失去
protect 保护
energy 能源;能量
difference 影响;差异
trip 旅行
二、重点短语
polar bear 北极熊
fresh water 淡水
shopping centre 购物中心
go fishing 去钓鱼
tour guide 导游
on top of the world 世界之巅;幸福到极点
in danger 处于危险中
turn off 关掉
save energy 节约能源
make a difference 产生影响
三、核心句型
1. What are you going to do in the Arctic? 你打算在北极做什么?
2. Who will you go with? 你和谁一起去?
3. I’ll show you my TV. 我会给你看我的电视。
4. The Arctic is in danger. 北极正处于危险之中。
5. Ice in the Arctic is disappearing. 北极的冰正在消失。
6. Small things can make a big difference. 小事也能产生大影响。
四、重难点突破
1. be going to 与 will 的区别
be going to 和 will 都可以表示将来的打算或预测,但用法有区别:
be going to:强调已经计划好的事情,主语的意图明确:
What are you going to do in the Arctic? 你打算在北极做什么?
We’re going to the shopping centre. 我们要去购物中心。
will:强调将来的动作,不一定是已计划的,常用于提议、承诺或即时决定:
Who will you go with? 你将和谁一起去?
I’ll show you my TV. 我会给你看我的电视。
【进阶训练】用 be going to 或 will 填空:
1. We ________ go whale watching tomorrow. (已经计划好了)
2. I think it ________ be very cold in the Arctic. (预测)
解析:1. are going to(已计划好的事用 be going to)2. will(预测未来的事用 will)
2. 现在进行时表示变化
本单元出现了用现在进行时表达“正在发生的变化”的用法:
The Arctic is getting smaller. 北极正在变小。
People are making the earth warmer and warmer. 人们正在让地球变得越来越暖。
Ice in the Arctic is disappearing. 北极的冰正在消失。
这些句子用“is/am/are + 动词-ing”表示某个变化正在发生,强调过程正在进行。
【进阶训练】用括号内词的适当形式填空:
1. The ice ________ (disappear) now.
2. The earth ________ (get) warmer and warmer.
解析:1. is disappearing(主语单数,用 is + 动词-ing)2. is getting(主语单数,用 is + 动词-ing)
3. 祈使句表达环保建议
本单元中王子熙的演讲用了祈使句来提出环保建议,祈使句以动词原形开头:
Use bicycles, not cars. 骑自行车,不要开车。
Turn off the lights and save energy. 关掉灯,节约能源。
否定祈使句在动词前加 Don’t:
Don’t use cars. Use bicycles! 不要用车。骑自行车!
【进阶训练】将下列句子改为祈使句(肯定/否定):
1. You should save water. (肯定祈使句)
2. You shouldn’t waste energy. (否定祈使句)
解析:1. Save water.(去掉主语 You should,直接用动词原形开头)2. Don’t waste energy.(否定祈使句在动词前加 Don’t)
巩固练习
一、看图,选择正确的单词填写在横线上。
igloo penguin polar bear whale
1. ________
2. ________
3. ________
4. ________
二、选出不同类的一项。
1. A. holiday B. wonderful C. exciting D. beautiful
2. A. Arctic B. Antarctic C. earth D. penguin
3. A. save energy B. turn off C. in danger D. go fishing
4. A. disappear B. lose C. protect D. danger
5. A. ice B. snow C. water D. whale
三、用括号内词的适当形式填空。
1. We ________ (go) fishing tomorrow. (已计划)
2. I think it ________ (be) very cold in the Antarctic.
3. The ice ________ (disappear) now. The earth is getting warmer.
4. She ________ (show) you the igloo tomorrow.
5. People ________ (make) the earth warmer and warmer.
四、阅读判断,正确写 T,错误写 F。
Nina goes on holiday to the Arctic to visit her grandparents. At first, she doesn’t like it. There are no shopping centres, no playgrounds and there’s no TV. But then Grandpa takes her fishing. Nina catches a fish! “This is great fun, Grandpa!” she says. The next day, they go to a playground. It’s a natural playground with ice and snow. And Grandpa shows Nina his TV — it’s the wonderful northern lights in the sky! Nina loves her holiday. She wants to come back next year.
( ) 1. Nina goes on holiday to the Antarctic.
( ) 2. At first, Nina doesn’t like the Arctic because there are no shopping centres.
( ) 3. Nina goes fishing with her grandma.
( ) 4. Grandpa’s TV is the northern lights in the sky.
( ) 5. Nina wants to come back to the Arctic next year.
参考答案
【重难点突破】
1. are going to 2. will
1. is disappearing 2. is getting
1. Save water. 2. Don’t waste energy.
巩固练习参考答案
一、1. polar bear 2. penguin 3. igloo 4. whale
二、1. A 2. D 3. C 4. D 5. D
三、1. are going to go 2. will be 3. is disappearing 4. will show 5. are making
四、1. F 2. T 3. F 4. T 5. T
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