Unit 5 Look into Science Lesson 30 Science Affects Us课件

课件23张PPT。Lesson 30
Science Affects Us1.Have you ever done any interesting experiments? Can you describe one of them?
2.What would life be like without computers or mobile phones?Think about itNew wordsdiscovery
affect
suggest
mobile phonePresentation n. 发现
v. 影响
v. 建议
n. 手机Read L30 and fill in the blanks.Science affects people’s (1) lives. Without
the scientific developments of recent years,
our lives would be very different. Can you
imagine life without computers or (2) ?
Scientific (3) are making our lives better
and better. DNA is really one of the most
amazing things on the earth. Many people
think it will (4) the world.1. Wang Mei didn’t enjoy learning about DNA. ( )
2. Who did an experiment in science class this week?
________________________________.
3. Does Wang Mei think the experiment they did sounds interesting?
_______________________________________________.
4. The air pressure _____________________________ is higher than that of the water pushing down from inside the jar.
5.I always wonder what life would be like without computers or mobile phones .
___________________________________________中考题型 课堂练FBrian, Danny and Jenny
Yes, she doespushing up on the cardboard我一直想知道如果没有电脑和手机生活会是什么样子。1. suggest v. 建议，提议
1) suggest sth. to sb. 向某人建议某事
2) suggest doing sth. 建议做某事
3) suggest that 建议……
4) suggestion n. 建议
Language Points:2. better and better这一句型的结构是：比较级+and+比较级
意思是“越来越……”。
例如：张家口变得越来越美丽了。
Zhang Jiakou is getting more and more
beautiful.3. 【辨析】lie, lay, lain与 lying
lie vi. 躺，平放
过去式lay，过去分词lain，现在分词 lying
He was lying in the shade of the tree. 他正躺在树
荫下。
He lay down on his bed. 他躺在床上。lie vi. 说谎
过去式lied过去分词lied，现在分词lying
I’m sorry I lied to you. 我很抱歉向你撒了谎。
He is always telling a lie. 他总是说谎。
lay vt / vi 放，置
过去式laid，过去分词laid，现在分词laying
Lay it on the table. 把它放在桌上。规则变化lie撒谎 自由变化lie是躺
lay是放置和下蛋 变化与say是一样You shouldn’t ____ to me. I always believe you.
lie B. lying
C. lay D. liesA4. careful adj. 小心的;细心的
?Be careful! Come down.
小心！下来。
(1) ____ ____ ____ (小心)the glass. Don’t break it.
(2) ____ ____!(小心) There is a car coming here.
(3)Tom is a c ____ student. He often makes mistakes in the exam. 【点拨】(1)填 Be careful with。 be careful with . . . 意为“对……仔细/ 细心”。
(2)填Be careful。 be careful 意为“当心;小心”，相当于look out 和take care,可以在祈使句中单独使用。
(3)填careless。句意为: 汤姆是一个粗心的学生。他经常在考试中犯错误。careless作形容词，意为“粗心的”，它与careful意思相反;carelessly作副词，意为“粗心地”，它与carefully相反。Exercises Ⅰ. 单项选择(5分钟，10分)
( )1. —Bob never does his homework _____ Mary.
—Yes, he makes lots of mistakes.
A. so careful B. as carefully as
C. carefully D. as careful as( )2. —Do you know this boy?
—Which boy?
—The one _____ under the big tree.
A. lay B. lain C. laying D. lying
( )3. —How do you know that she likes singing?
—I often hear her _____ after class.
A. to sing B. sang
C. sing D. sings( )4. They stopped _____ , but there was no more sound.
A. to listen B. to hear
C. listening D. hearing
( )5. My younger brother isn’t _____ to take care of himself.
A. enough old B. old enough
C. small enough D. enough small1. The man is ____________ (bad) hurt.
2. Don’t be ____________ (scary). You will be OK.
3. —Are you hurt?
—No, I’m not ____________ (injure).用所给词的适当形式填空。 badly scared injuredⅡ. 完成句子(5分钟，10分)
1. Don’t worry about your son. It’s ____ ____ (没什么严重的).
2. We needn’t ____ ____ ____ (叫救护车).
3. ____ ____ (小心)！There is something dangerous ahead.
答案: 1. nothing serious 2. call an ambulance
3. Be careful4. He ____ ____ ____ (尽力赶上)the early bus,but it was too late.
5. Don’t worry about him. I can ____ ____ ____ (照顾) him.
答案: 4. tried to catch 5. take care of1. He didn’t agree to go there with us.
He __________________ there with us.
2. Why don’t you go swimming with me?
Why _____________ swimming with me?
3. Grandma takes care of my sister every day.
Grandma ____________ my sister every day.
4. You don’t have to go home today.
You _______________ home today.同义句转换。（每空一词） refused to go not go looks after needn’t go Homework

1.Finish off the rest exercises.
2.Preview lesson 43.