Unit3
辣妈辣妹主题曲◆ 知识探究
Step one Getting ready & Reading
课文讲解
1Listen to a woman making a phone order.听一位女士电话购物。
Order n.订货；订购。 make an order 订购。如：
Plea make an order for a new sofa and a tea table.请订购一个新沙发和茶几。
回顾：order 还可表示“命令”的意思。如：
This is an order! 这是命令!
2 Learn how to compare things by using the comparative of adjectives.学习如何用形容词的比较级来对比事物。
Compare v.比较；对比。Compare…with… 把···与···相比。如：
Compare this picture with that one and e which is better.
把这幅画和那幅画相比，看看哪幅更好。
3progresdWe u the computer for typing. 我们用电脑来打字。
Type v.打字。如：
I’ll ask Miss white to type the letter. 我会让怀特小姐把这封信打出来。
Type 还可作名词，表示“种类；类型”的意思。如：
A type of 一种
4 Computers may work as doctors. 电脑可以当医生。
Work as 从事···工作。如：
denied
My brother works as an engineer.我哥哥是工程师。
5You may be unaware of them. 你可能没意识到这些。
Be unaware of 没意识到；未察觉。如：
He was unaware of the truth. 他没意识到真想。
拓展：be aware of 意识到；察觉到
6 You depend on computers more than you realize. 你依赖电脑的程度比你知道的更多。
Depend on 依靠。如：
Children depend on their parents.孩子依靠父母。
7They can calculate at a faster speed than we can and almost never give wrong answers. 它们的计算得比我们快，而且几乎从不出错。
Speed n. 速度。如：
At a fast / full speed 快速 / 全速
At a speed of 120 kilometers per hour 以每小时120公里的速度
8 In addition, computers can do important jobs like operating railways and flying planes and spaceships.此外，电脑可以做很重要的工作，如铁路系统的控制、飞机飞船的操作。
In addition 除···以外（还）。如：
He does well in all his subjects.In addition,he is good at playing sports.
雅思要求词汇量
他各门功课都很出色。此外，他还擅长各项运动。
如何用牛奶洗脸
9. However, one day computers may be able to do a better job than human beings.solange
Be able to 意为“能，能够”，后接动词原形。
Tom isn’t able to come becau he is ill.
辨析be able to与can
be able to | 表示有能力，往往是经过努力而获得的能力 | steel pipe有人称和数的变化 | 可用于多种时态 |
can | 表示身体或精神上自身具备的能力，还可以表示请求、允许、推测 | 没有人称和数的变化 | 只有一般现在时和一般过去时的两种时态 |
| | | |
10. Some young people always need help from their parents.
Need作实义动词讲，意为需要
Need to do sth “需要做某事”，主语通常是人
We need to tell him the truth.
Need doing sth “需要做某事”，主语通常是物
The flowers need watering.kina
Need作情态动词时，没有人称和数的变化，后接动词原形，主要用于否定句或疑问句中。
11. We had fun and learnt something new as well.
Have fun意为“玩得开心，过得愉快”，相当于have a good/great/wonderful time或enjoy onelf,此处fun是不可数名词，意为“玩笑，娱乐，乐趣”
The children are having fun playing in the park.
As well意为“也”。通常放句末，相当于too.
I can speak Chine and I can speak English as well.
12. ...but it works at a much faster speed than my old one.
At介词，意为“（速度）以...”。
At a speed of以...的速度 at high/low speed以高速/低速
At top/full speed以全速
Much faster意为“快得多”。“much+形容词/副词的比较级”意为“......得多”
I’m much taller than you.
常见的用于修饰比较级的单词或短语有much, even, a little, a bit等。
Step two-Listening 讲解
Price each单价
Price名词，意为“价钱价格”。询问价格用“What’s the ?”，相当于“How much ?”。
1）表示价格高用“high”,表示价格低用“low”。
The price of the book is very high.
2）expensive “昂贵的，花钱多的”，表示物品“贵”；表示物品“贱”用cheap（廉价的，便宜的）。它们的主语必须是货物、物品本身。
This watch is expensive.
【随堂练】：
(一)单项选择：
1 This computer is ________ than that one.
A. expensive B. more expensive
C. much expensive D.most expensive
( ) 2 Mary depended ________ her grandparents after her parents died in the accident
A. on B. in C. by D. with
( ) 3 Lucy’s mother ________ a teacher in a big school. She is kind to all her students.
政法英杰 A. works out B. works as C. works in D. works on
frownies( ) 4 Sam is an excellent engineer. ________ ,he is a good footballer.
A. in trouble B. in time C. in addition D. in future
( ) 5 We u the mou for ________ the computer.
A. control B. controls C. controlled D. controlling
(二) 单词拼写。
1 —How fast can the car run?
—It can run at a s ________ of 150 kilometres an hour.
2We d ________ on each other becau we are good friends.
3The ants are so t ________ that people are always unaware of them.
4Usr your b ________ , and you’ll find a way.
5My venty-year-old grandpa is learning to t ________ with the computer.
(三) 完成句子。
1 人们生病时要依靠医生。
People have to ________ ________ doctors when they are ill.
2此外，李老师还是个灌篮高手。
________ ________, Mr Li is a great basketball player.
3 你父亲从事什么工作？
What does your father ________ ________?
4我没察觉到这个错误的答案。
I ________ ________ ________ the wrong answer.
5 如果你比较一下这些文章，你就会知道谁写得最好。
________ you ________ the articles,you’ll know writes the best.
(四) 读课文，选择正确答案。
( ) 1 The first computers appeared ________.
A. in 1940 B. before cars C. in the 1940s
