初中英语Lesson 30 Science Affects Us精品学案

Lesson 30 Science Affects Us   导学案

【学习目标】

1.重点单词:

affect,suggest,development,mobile phone,discovery

2.重点词组: turn…over,push up,push down,in place

3.重点句式:

(1) Scientific discoveries are making our lives better and better.

(2) The air pressure pushing up on the cardboard is higher than that of the water pushing down from inside the jar.

【重点难点】

1. 重点：掌握重点短语和句型

2. 难点：wonder的用法；比较级+and+比较级的用法

【导学过程】

一、课前预习

核心单词

1. ________ v. 建议，提议；暗示　　　　　　

2. ________ n. 发展 

3. ________ n. 移动电话

4. ________ n. 发现；发觉

5. affect v. ________

单词变形

1. suggest→________(n. )

2. mobile phone→________(近义词)

3. development→________(v. )

4. discovery→________(v. )

二、课堂学习

Step 1. 自主探究，合作交流

Read the lesson and fill in the blanks.

Science affects people’s _________ lives. Without the scientific developments of recent years, our lives would be very different. Can you imagine life without computers or _____________? Scientific ___________ are making our lives better and better. DNA is really one of the most amazing things on the earth. Many people think it will ________  the world.

Step 2. 交流展示

1. suggest

  suggest作及物动词，意为“建议、暗示”，后加名词、代词、动名词作宾语；____________________ 意为“建议做某事”，也可用在句式___________________________ 这一句式中，表示“建议某人做某事”。它的名词形式是______________ ，意为“建议”，作可数名词，复数形式是suggestions。

1)  They suggested_________________ (build) a new school.

2) I suggest you_____________________ (do)  like me. 我建议你想我一样这么做。

3) They gave some useful__________________  at the meeting.

4) Nobody _________（建议）repairing the machine by ourselves, so we had to have it repaired.

2. discovery作可数名词，意为“发现、发觉”，复数形式是____________________。

discover是及物动词，意为“发现”，后加名词、代词或宾语从句。

 1) Have you noticed those ____________ (discover)? They are helpful to us.

 2) We_____________________ (discover) their secrets. 我们已经发现了他们的秘密。

3. I always wonder what life would be like without computers or mobile phones.

　wonder为及物动词,意为“惊奇,想知道”,相当于________________________,其后可接“疑问词+动词不定式”结构和宾语从句。

(1)wonder还可作不及物动词,意为“觉得奇怪,想知道”,可构成短语wonder about/at。

　(2)wonder还可作可数名词,意为“奇迹”。

　(3)wonderful为形容词,意为“美妙的”。

1) —What do you think of the 3D film the Thank last night?

— It Was _______. I enjoyed it a lot,

A. boring B. wonderful C. strange D. terrible

2) —I wonder ________.

—It will fall on a Saturday.

   A. how will National Day fall on this year

   B. How National Day will fall on this year

   C. What day will National Day fall on this year

   D. What day National Day will fall on this year

4.Scientific discoveries are making our lives better and better.

　better and better意为“越来越好”。形容词或副词的比较级重复使用,并用and连接,表示程度的增加,意为“越来越……”,这一结构是“________________________”。如果是多音节的形容词或副词表达这一含义时应用“________________________________”表示。

　【拓展】“”意为“越……越……”。_____________________________________

  1) The earlier kids learn to be independent, the ________ it is for their future.

A. good   B. well    C. better D. best

  2) It’s summer now，the weather is getting  .

A. higher and higher   B. lower and lower   

C. hotter and hotter   D. colder and colder

三、知识点拨：

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) sb.(should) do sth.建议某人做某事

(4) suggestion n.建议

2.First,get a jar full of water and a piece of cardboard.本句中的短语full of water用在名词jar之后作定语,不定式、介词短语和定语从句等都可用在名词后作定语。

3.turn...over意为“将……翻过来。”

【拓展】turn over还意为“移交,仔细考虑”。

4.The air pressure pushing up on the cardboard is higher than that of the water pushing down from inside the jar.

push up意为“向上推,提高”。push down意为“向下按”。

本句中的that用来替代“the+前述名词”,以避免重复。

5.in place意为“在原地,在恰当的位置”。

【拓展】(1)in place of sb./sth.=in sb.’s/sth.’s place代替/顶替某人/物

(2)take place发生

(3)take sb.’s/sth.’s place=take the place of sb./sth.代替/替换某人/物

6.affect为及物动词,意为“影响”,相当于influence,常构成短语:be affected by被……影响。

【拓展】effect为名词,意为“结果,影响”。have an effect on意为“对……有影响”。

7.development为名词,意为“发展,成长”,the development of意为“……的发展”。

【拓展】develop为动词,意为“(使)成长,发展”。a developing country发展中国家,a developed country发达国家。

8.wonder为及物动词,意为“想知道”,相当于want to know,其后可接“疑问词+动词不定式”结构和宾语从句。

【拓展】(1)wonder还可作不及物动词,意为“感到诧异”,可构成短语wonder at。

(2)wonder还可作可数名词,意为“奇迹”。

(3)wonderful为形容词,意为“美妙的”。

9.discovery作可数名词,意为“发现,发觉”,复数形式是discoveries。

如:This is an important discovery.这是一个重要的发现。

discover是及物动词,意为“发现”,后可加名词(短语)或代词。

如:We have discovered their secrets.我们已经发现了他们的秘密。

10.better and better意为“越来越好”。形容词或副词的比较级重复使用,并用and连接,表示程度的增加,意为“越来越……”,这一结构是“比较级+and+比较级”。如果用多音节的形容词或副词表达这一意思时应用“more and more+形容词或副词的原级”表示。

【拓展】“the+比较级,the+比较级”意为“越……越……”。

四、【知识巩固】

I. 单项选择。

(　　)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 that 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 small

Ⅱ.根据汉语提示完成句子

1.I 　　　(建议) you ask him some specific questions about his past. 

2.The talks will focus on economic 　　　(发展)of the region. 

3.The 　　　(发现) of America is generally owed to Columbus. 

4.More than seven million people have been 　　　(影响) by drought. 

5.The 　　　(手机) is now a must-have for children. 

Ⅲ.翻译下列句子

1.闹钟确实响了,但我翻了个身又接着睡着了。(turn over)

2.我并不负责提高销售额。(push up)

3.书都放得整整齐齐,井井有条。(in place)

答案：

一、课前预习

核心单词　1.suggest　2.development　3.mobile phone

4．discovery　5.影响

单词变形　1.suggestion　2.telephone/phone　3.develop  4．discover

二、Step 1.自主探究，合作交流：

1. everyday

2. mobile phones

3. discoveries

4. change

Step 2. 交流展示

1. suggest doing sth.；  suggest sb. to do sth.；    suggestion

1) building  2) to do  3) suggestions  4) suggested

2. discoveries；

1) discoveries  2) have discovered

3. want to know;  

1) B   2) D

4. 比较级+and+比较级；   more and more+形容词或副词的原级； 

the+比较级,the+比较级；

  1) C  2) C

四、【知识巩固】

Ⅰ.1.B　2.D　3.C　4.A　5.B

Ⅱ.1.suggest　2.development　3.discovery　4.affected　5.mobile phone

Ⅲ.1.The alarm did go off but I turned over and went back to sleep.

2.It’s not my job to push up the sales.

3.The books were all neatly in place,carefully arranged.