外研版高中英语必修一Unit 5 A Lesson in a Lab Period One Introduction & Reading课件（70张ppt)
文档属性
| 名称 | 外研版高中英语必修一Unit 5 A Lesson in a Lab Period One Introduction & Reading课件（70张ppt) |  | |
| 格式 | ppt | ||
| 文件大小 | 970.0KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-09-27 08:10:47 | ||
图片预览
文档简介
(共70张PPT)
Module 5 A Lesson in a Lab
2022-2023学年外研版高中英语必修一教学课件★★
[译文] 如果你是(一名富有创造力的科学家)，你可能在别人只看到垃圾的地方看到可利用的价值。
[分析] 本句是一个主从复合句，包含一个if引导的条件状语从句和一个where引导的地点状语从句。
Period One Introduction & Reading and
Vocabulary
Ⅰ.单词自测
1． vi.膨胀；扩张
(反义词) vi.收缩
2． n．电
adj.电的；电动的
adj.与电有关的；用电的
adj.电子的
3． n．阶段；时期
expand
contract
electricity
electric
electrical
electronic
stage
4． n．结论
v．下结论；推断；决定
5． n．目标；目的
6． n．反应
vi.(化学)反应
7． n．设备；装备
8． adj.部分的；局部的
9． vt.煮；沸腾
10． adj.普通的；平常的
conclusion
conclude
aim
reaction
react
equipment
partial
boil
ordinary
Ⅱ.短语默写
1． 想起；考虑
2． 与……起(化学)反应
3． 把……按顺序排列
4． 找出，查明
5． 往……加入……
6． 把……留在外面
think of
react with
put...in order
find out
add...to...
keep...out of
阅读清障
①think of 想象；想起
[1]It is hard to...中it是形式主语，真正的主语是to think of...。
②use n．[C]用处，用途
③be used是被动语态，意为“被用(来)……”。
④electrical/ ?lektr kl/adj.与电有关的；用电的
⑤equipment/I?kw pm nt/n.设备；装备
⑥react/r ??kt/vi.(化学)反应
⑦substance/?s?bst ns/n.物质
[2]When we use metals是时间状语从句，主句是it is important to know how they react...，其中it是形式主语，动词不定式短语 to know how they react...是真正的主语。
⑧oxygen/??ks d? n/n.氧气
⑨reaction/r ??k?n/n.反应
⑩put sthin order 把某物按顺序排列
[3]that react most是that引导的定语从句，修饰the metals。
at the top (of)在(……)顶端
form/f??m/vi.&vt.形成
oxide/??ksa d/n.氧化物
partial/?p???l/adj.部分的；局部的
steam/sti?m/n.蒸汽；水汽
[4]Below is a description of a simple scientific experiment.是完全倒装句，主语为a description，is below是系表结构。
[5]It shows us how iron reacts...中it是主语，shows是谓语动词，us及how引导的宾语从句作了shows的双宾语。
aim/e m/n.目标；目的
rust/r?st/vi.生锈
[6]if iron rusts是if引导的宾语从句，if意为“是否”。
[7]that has no air in it是that引导的定语从句，修饰water。
*an oxide＝another substance＋oxygen
课文译文
很难想象一个没有金属的世界。不同的金属有不同的用途，比如，钢用来造车，铁用来造电力设备。当我们使用金属时，了解它们和不同的物质(例如水和氧气)如何发生反应是很重要的。(不同的)金属与这些物质的反应程度可以按顺序排列起来。下列是一张金属反应表，反应最强的排在上面，反应最弱的排在下面。
金属 在有氧状态下加热 与水或水蒸气的反应
钾 燃烧后生
成氧化物 与冷水反应
钠
钙
镁 与水蒸气反应
铝
锌
铁 反应缓慢 部分反应
铜 部分反应 不反应
*氧化物＝另一种物质＋氧气
一个简单的科学实验
下面是对一个简单科学实验的描述。这篇文章向我们表明，铁是怎样与空气和水反应的。
目的：弄清铁是否在下列状态下生锈：(a)在干燥的空气中；(b)在没有空气的水中(不含空气的水)；(c)在普通的水中。
仪器：三枚洁净的铁钉、试管、试管夹、棉球、油、本生灯(即煤气灯)。
Ⅰ.速读课文并完成下列习题
1．Read Passage A and choose the best title for it.
A．The Different Uses of Metals
B．The Reaction of Metals
C．The Reaction of Metals with Oxygen
D．The Reaction of Metals with Water
答案 B
2．Read the subtitles in Passage B and answer what should be included in a description of an experiment.
(1) (2) (3) .
(4) (5) .
Aim
Apparatus
Method
Result
Conclusion
Ⅱ.课文阅读理解
Passage A
1．This passage mainly talks about ________.
A．the kind of metal
B．what kind of metal reacts most
C．the reaction of metals with different substances
D．how metals react
答案 C
2．Which of the following metals reacts the most with water
A．Copper. B．Iron.
C．Aluminium. D．Sodium.
答案 D
3．When heated in oxygen，________ will react partially.
A．zinc B．copper
C．potassium D．all metals
答案 B
4．According to the passage，it can be inferred that ________ will have less use in making kitchen tools.
A．aluminium B．iron
C．steel D．copper
答案 A
Passage B
5．The experiment shows us ________.
A．how iron rusts with air
B．iron is quite easy to rust
C．how to prevent iron from rusting
D．how iron reacts with air and with water
答案 D
6．“Air free water” means “________”．
A．air with a lot of water
B．air without water
C．water with a lot of air
D．water without air
答案 D
7．If some clean iron nails are put in a damp place for a week，the nails will ________.
A．rust B．not rust
C．form an oxide D．keep the place dry
答案 A
Ⅲ.课文阅读填空
The reaction of metals When we use metals，it is important to know how they react with different 1. .The reaction of metals with oxygen can be put 2. .In the table potassium reacts most at the top and 3. reacts least at the bottom.
substances
in order
copper
Iron reaction 4. expe
riment In dry air Result：The nails have not rusted.
Conclusion：Iron does not rust in
6． air.
In 5. water Result：The nails do not rust in the 7. with air free water.
Conclusion：Iron does not rust in
8. water.
In ordinary
water Result：The nails rust in the tube with 9. water.
Conclusion：Iron 10. in ordinary water.
air free
dry
tube
air free
ordinary
rusts
Ⅳ.难句分析
When we use metals, it is important to know how they react with different substances, for example, water and oxygen.
句式分析 when we use metals为 从句。it为 ，
真正的主语是后面的 ：to know how they...；how
引导的从句作know的宾语。for example是 ，water and
oxygen是对different substances的举例说明。
自主翻译 当我们使用金属时，要了解金属和不同的物质如何发生反应，这一点很重要。
时间状语
形式主语
动词不定式短语
插入语
1．(教材P44)When we use metals，it is important to know how they with different substances，for example，water and
oxygen.
当我们使用金属时，要了解金属和不同的物质如何发生反应，这一点很重要。
react vi.(化学)反应
(1)How did they react to your suggestion
他们对你的建议有什么反应？
(2)How do acids react with metals
酸对金属起什么反应？
react
[归纳拓展]
(1)react to对……作出反应，和……起反应
react with与……产生化学反应
react against反对，反抗
(2)reaction n．反应；起作用(常与介词to连用)
[即时跟踪]
单句语法填空
(1)Iron reacts water and air to produce rust.
(2)How did Wilson react your idea
(3)What's your mother's (react) to the news
(4)Children tend to react their parents by going against
their wishes.
with
to
reaction
against
2．(教材P45) ：To find out if iron rusts (a) in dry air；(b) in
water that has no air in it (air free water)；(c) in ordinary water.
目的：验证铁在下列情况下是否会生锈：(a)在干燥的空气中；(b)在不含空气的水中；(c)在普通的水中。
aim n．目的；目标；瞄准v.力求达到；瞄准；对准
(1)You must take aim at the fierce tiger carefully before you shoot.
射凶猛的老虎前你必须得仔细瞄准。
(2)The book is aimed at very young children.
这本书的对象是幼童。
Aim
[归纳拓展]
(1)with the aim of...为了……
without aim无目的地
achieve one's aim达到目的；实现目标
take aim at...瞄准……
(2)aim...at...用……瞄准/对准……
aim to do sth＝aim at doing sth旨在做某事，打算做某事
be aimed at...旨在；目的在于
with
at
improving
3．(教材P45) ：Iron does not rust in dry air.
结论：铁在干燥的空气中不会生锈。
conclusion n．结论
(1)I came to/reached the conclusion that he'd been lying.
我断定他是在说谎。
(2)In conclusion，I'd like to say that the work has been well done.
最后，我想说这工作做得不错。
Conclusion
[归纳拓展]
(1)draw/come to/arrive at/reach a conclusion得出结论
make a conclusion下结论
in conclusion最后；总之
(2)conclude v．下结论；推断；结束；决定
conclude...with...以……结束……
[即时跟踪]
(1)最后，祝大家健康长寿。
，I wish you all good health and a long life.
(2)现在下结论还太早。
It is still too early to now.
(3)让我用一句谚语结束我的演讲：有志者，事竟成。
Let me my speech a saying：Where there is a will，
there is a way.
In conclusion
draw/come to/arrive at/reach a conclusion
conclude
with
4．(教材P45)Iron rusts in water.
铁在普通的水中会生锈。
ordinary adj.平常的，平淡无奇的
(1)They have nothing in common.
他们没有任何共同之处。
(2)As usual，she went for a walk.
跟平时一样，她出去散步了。
ordinary
[易混辨析] ordinary/common/usual/normal
(1)ordinary(与众多同类的东西相比)强调“平常的，平淡无奇的”。
(2)common强调“常见的，不足为奇的”，意为“共同的，公共的，公有的，普通的”，common sense常识；have...in common与……相同。
(3)usual通常的；惯常的；惯例的。强调依照惯例来判断；有“遵循常规”之意。as usual像往常一样。
(4)normal正常的，常态的，合乎标准的。return to normal恢复正常。
[即时跟踪]
用ordinary，common，usual，normal填空
(1)Rabbits and foxes are in the countryside.
(2)Housing prices in Beijing are out of reach for people.
(3)The doctor said the child's temperature was .
(4)The sweethearts in love meet once a week at the place.
(5)She is a(n) girl，and doesn't stand out in a crowd.
(6)Li Qi works hard as and it has paid off.He has got
the first in The Voice of China.
common
ordinary
normal
usual
ordinary
usual
1．(教材P44)The reaction of metals with these substances can be .
(不同的)金属与这些物质的反应可以按顺序排列起来。
put...in order把……按顺序排列/整理；把……安排妥当
All the things in the room were out of order，but she soon put them in order.
房间里的东西摆放得乱七八糟的，但是她很快就把它们收拾整齐了。
put in order
[即时跟踪]
(1)完成句子
①Everything in the kitchen is (井然有序的)．
②My iPhone 6 is (又出故障了)．
(2)单句改错
Uncle Bob put his business affairs in the order before he died.
in good order
out of order again
2．(教材P45) some oil the water.This will keep air out
of the water.
往水中加些油，这将防止空气进入水中。
add...to...往……加入……，把……添加到……
(1)Add your scores up and let's see who will win.
把你们的分数加起来，让我们看一下谁会赢。
(2)His whole education added up to no more than two months.
他接受的全部教育加起来不超过两个月。
Add
to
[即时跟踪]
(1)完成句子
①烟火使节日之夜更加迷人。
Fireworks the attraction of the festival night.
②毫无疑问这是火上浇油。
There is no doubt that it is like oil the fire.
③这些账单加起来正好一百美元。
The bills exactly $100.
added to
adding
to
add up to
(2)单句语法填空
①Two (add) to five is seven.
②His whole school education added up only 2 years because
of his illness.
added
to
1．“分数/百分数＋of＋名词/代词”作主语
(教材P41) of the earth's surface is water.
地球表面的三分之二是水。
Two fifths of the students agree to hold an evening party for their teacher's birthday.
五分之二的同学同意为他们老师的生日举办一个晚会。
Two thirds
[归纳拓展]
“分数/百分数＋of＋名词/代词”作主语，谓语动词的单复数与of后的名词或代词一致。
注意：two thirds 是分数，表达分数时，我们遵循的原则是：分子基数词，分母序数词，分子大于“1”，分母加“ s”。
was drunk
has been done
2．It is＋adj.(for sb) to do sth
(教材P44) think of a world without metals.
很难想象一个没有金属的世界。
(1)It is important for us to grasp a living skill.
对我们来说，掌握一门生活技能是很重要的。
(2)It is a pity that you couldn't come.
你来不了，真遗憾。
It is hard to
[归纳拓展]
(1)It is＋adj.(for sb) to do sth中的it是形式主语，真正的主语是后面的动词不定式。
(2)it作形式主语的常见句型：
①It is＋adj.＋(for/of sb) to do sth
②It is＋adj./n.＋that从句
③It is no good/use doing sth做某事是没有好处/用处的
it is necessary to
It is no good
Ⅰ.单句语法填空
1．What (conclude) can you draw from the evidence
2．He studied hard every day， (aim) at passing the exam.
3．It is obvious that this is a (mix) of egg and orange.
4．This rope is twice longer that one.
5． usual，he got up very early.
conclusions
aiming
mixture
than
As
1．Close the door and the cold air the room.
2．I will my childhood every time I see the picture.
3．Look！Tony，your books are everywhere.Please them
.
4．Please some sugar my coffee.
5．He decided to who had taken his computer.
keep
out of
think of
put
in order
add
to
find out
Ⅲ.完成句子
1．做完实验后，一切东西都要有序的排列在器皿柜中。
After the experiment，everything is in the cupboard.
2．学好英语对我们来说很重要。
It is important .
3．这个国家三分之二的人口是农民。
of the population of the country farmers.
put in order
for us to learn English well
Two thirds
are
4．这个城镇南面坐落着一所学校。
To the south of the town .
5．他的目标是成为一个成功的作家。
He a successful writer.
lies a school
aims to be
Ⅳ.课文语法填空
Metals are very 1. (importantly) in the world.Different metals have different 2. (use)．For example，steel 3. (use) in cars，and iron in 4. (electricity) equipment.When we use metals，it is important 5. (know) how they react 6. different substances，for example，water and oxygen.The 7. (react) of metals with these substances can 8. (put) in order.Potassium，sodium，calcium，magnesium，aluminium and zinc react most,9. iron and copper react 10. (little).
important
uses
is used
electrical
to know
with
reaction
be put
and
least
Module 5 A Lesson in a Lab
2022-2023学年外研版高中英语必修一教学课件★★
[译文] 如果你是(一名富有创造力的科学家)，你可能在别人只看到垃圾的地方看到可利用的价值。
[分析] 本句是一个主从复合句，包含一个if引导的条件状语从句和一个where引导的地点状语从句。
Period One Introduction & Reading and
Vocabulary
Ⅰ.单词自测
1． vi.膨胀；扩张
(反义词) vi.收缩
2． n．电
adj.电的；电动的
adj.与电有关的；用电的
adj.电子的
3． n．阶段；时期
expand
contract
electricity
electric
electrical
electronic
stage
4． n．结论
v．下结论；推断；决定
5． n．目标；目的
6． n．反应
vi.(化学)反应
7． n．设备；装备
8． adj.部分的；局部的
9． vt.煮；沸腾
10． adj.普通的；平常的
conclusion
conclude
aim
reaction
react
equipment
partial
boil
ordinary
Ⅱ.短语默写
1． 想起；考虑
2． 与……起(化学)反应
3． 把……按顺序排列
4． 找出，查明
5． 往……加入……
6． 把……留在外面
think of
react with
put...in order
find out
add...to...
keep...out of
阅读清障
①think of 想象；想起
[1]It is hard to...中it是形式主语，真正的主语是to think of...。
②use n．[C]用处，用途
③be used是被动语态，意为“被用(来)……”。
④electrical/ ?lektr kl/adj.与电有关的；用电的
⑤equipment/I?kw pm nt/n.设备；装备
⑥react/r ??kt/vi.(化学)反应
⑦substance/?s?bst ns/n.物质
[2]When we use metals是时间状语从句，主句是it is important to know how they react...，其中it是形式主语，动词不定式短语 to know how they react...是真正的主语。
⑧oxygen/??ks d? n/n.氧气
⑨reaction/r ??k?n/n.反应
⑩put sthin order 把某物按顺序排列
[3]that react most是that引导的定语从句，修饰the metals。
at the top (of)在(……)顶端
form/f??m/vi.&vt.形成
oxide/??ksa d/n.氧化物
partial/?p???l/adj.部分的；局部的
steam/sti?m/n.蒸汽；水汽
[4]Below is a description of a simple scientific experiment.是完全倒装句，主语为a description，is below是系表结构。
[5]It shows us how iron reacts...中it是主语，shows是谓语动词，us及how引导的宾语从句作了shows的双宾语。
aim/e m/n.目标；目的
rust/r?st/vi.生锈
[6]if iron rusts是if引导的宾语从句，if意为“是否”。
[7]that has no air in it是that引导的定语从句，修饰water。
*an oxide＝another substance＋oxygen
课文译文
很难想象一个没有金属的世界。不同的金属有不同的用途，比如，钢用来造车，铁用来造电力设备。当我们使用金属时，了解它们和不同的物质(例如水和氧气)如何发生反应是很重要的。(不同的)金属与这些物质的反应程度可以按顺序排列起来。下列是一张金属反应表，反应最强的排在上面，反应最弱的排在下面。
金属 在有氧状态下加热 与水或水蒸气的反应
钾 燃烧后生
成氧化物 与冷水反应
钠
钙
镁 与水蒸气反应
铝
锌
铁 反应缓慢 部分反应
铜 部分反应 不反应
*氧化物＝另一种物质＋氧气
一个简单的科学实验
下面是对一个简单科学实验的描述。这篇文章向我们表明，铁是怎样与空气和水反应的。
目的：弄清铁是否在下列状态下生锈：(a)在干燥的空气中；(b)在没有空气的水中(不含空气的水)；(c)在普通的水中。
仪器：三枚洁净的铁钉、试管、试管夹、棉球、油、本生灯(即煤气灯)。
Ⅰ.速读课文并完成下列习题
1．Read Passage A and choose the best title for it.
A．The Different Uses of Metals
B．The Reaction of Metals
C．The Reaction of Metals with Oxygen
D．The Reaction of Metals with Water
答案 B
2．Read the subtitles in Passage B and answer what should be included in a description of an experiment.
(1) (2) (3) .
(4) (5) .
Aim
Apparatus
Method
Result
Conclusion
Ⅱ.课文阅读理解
Passage A
1．This passage mainly talks about ________.
A．the kind of metal
B．what kind of metal reacts most
C．the reaction of metals with different substances
D．how metals react
答案 C
2．Which of the following metals reacts the most with water
A．Copper. B．Iron.
C．Aluminium. D．Sodium.
答案 D
3．When heated in oxygen，________ will react partially.
A．zinc B．copper
C．potassium D．all metals
答案 B
4．According to the passage，it can be inferred that ________ will have less use in making kitchen tools.
A．aluminium B．iron
C．steel D．copper
答案 A
Passage B
5．The experiment shows us ________.
A．how iron rusts with air
B．iron is quite easy to rust
C．how to prevent iron from rusting
D．how iron reacts with air and with water
答案 D
6．“Air free water” means “________”．
A．air with a lot of water
B．air without water
C．water with a lot of air
D．water without air
答案 D
7．If some clean iron nails are put in a damp place for a week，the nails will ________.
A．rust B．not rust
C．form an oxide D．keep the place dry
答案 A
Ⅲ.课文阅读填空
The reaction of metals When we use metals，it is important to know how they react with different 1. .The reaction of metals with oxygen can be put 2. .In the table potassium reacts most at the top and 3. reacts least at the bottom.
substances
in order
copper
Iron reaction 4. expe
riment In dry air Result：The nails have not rusted.
Conclusion：Iron does not rust in
6． air.
In 5. water Result：The nails do not rust in the 7. with air free water.
Conclusion：Iron does not rust in
8. water.
In ordinary
water Result：The nails rust in the tube with 9. water.
Conclusion：Iron 10. in ordinary water.
air free
dry
tube
air free
ordinary
rusts
Ⅳ.难句分析
When we use metals, it is important to know how they react with different substances, for example, water and oxygen.
句式分析 when we use metals为 从句。it为 ，
真正的主语是后面的 ：to know how they...；how
引导的从句作know的宾语。for example是 ，water and
oxygen是对different substances的举例说明。
自主翻译 当我们使用金属时，要了解金属和不同的物质如何发生反应，这一点很重要。
时间状语
形式主语
动词不定式短语
插入语
1．(教材P44)When we use metals，it is important to know how they with different substances，for example，water and
oxygen.
当我们使用金属时，要了解金属和不同的物质如何发生反应，这一点很重要。
react vi.(化学)反应
(1)How did they react to your suggestion
他们对你的建议有什么反应？
(2)How do acids react with metals
酸对金属起什么反应？
react
[归纳拓展]
(1)react to对……作出反应，和……起反应
react with与……产生化学反应
react against反对，反抗
(2)reaction n．反应；起作用(常与介词to连用)
[即时跟踪]
单句语法填空
(1)Iron reacts water and air to produce rust.
(2)How did Wilson react your idea
(3)What's your mother's (react) to the news
(4)Children tend to react their parents by going against
their wishes.
with
to
reaction
against
2．(教材P45) ：To find out if iron rusts (a) in dry air；(b) in
water that has no air in it (air free water)；(c) in ordinary water.
目的：验证铁在下列情况下是否会生锈：(a)在干燥的空气中；(b)在不含空气的水中；(c)在普通的水中。
aim n．目的；目标；瞄准v.力求达到；瞄准；对准
(1)You must take aim at the fierce tiger carefully before you shoot.
射凶猛的老虎前你必须得仔细瞄准。
(2)The book is aimed at very young children.
这本书的对象是幼童。
Aim
[归纳拓展]
(1)with the aim of...为了……
without aim无目的地
achieve one's aim达到目的；实现目标
take aim at...瞄准……
(2)aim...at...用……瞄准/对准……
aim to do sth＝aim at doing sth旨在做某事，打算做某事
be aimed at...旨在；目的在于
with
at
improving
3．(教材P45) ：Iron does not rust in dry air.
结论：铁在干燥的空气中不会生锈。
conclusion n．结论
(1)I came to/reached the conclusion that he'd been lying.
我断定他是在说谎。
(2)In conclusion，I'd like to say that the work has been well done.
最后，我想说这工作做得不错。
Conclusion
[归纳拓展]
(1)draw/come to/arrive at/reach a conclusion得出结论
make a conclusion下结论
in conclusion最后；总之
(2)conclude v．下结论；推断；结束；决定
conclude...with...以……结束……
[即时跟踪]
(1)最后，祝大家健康长寿。
，I wish you all good health and a long life.
(2)现在下结论还太早。
It is still too early to now.
(3)让我用一句谚语结束我的演讲：有志者，事竟成。
Let me my speech a saying：Where there is a will，
there is a way.
In conclusion
draw/come to/arrive at/reach a conclusion
conclude
with
4．(教材P45)Iron rusts in water.
铁在普通的水中会生锈。
ordinary adj.平常的，平淡无奇的
(1)They have nothing in common.
他们没有任何共同之处。
(2)As usual，she went for a walk.
跟平时一样，她出去散步了。
ordinary
[易混辨析] ordinary/common/usual/normal
(1)ordinary(与众多同类的东西相比)强调“平常的，平淡无奇的”。
(2)common强调“常见的，不足为奇的”，意为“共同的，公共的，公有的，普通的”，common sense常识；have...in common与……相同。
(3)usual通常的；惯常的；惯例的。强调依照惯例来判断；有“遵循常规”之意。as usual像往常一样。
(4)normal正常的，常态的，合乎标准的。return to normal恢复正常。
[即时跟踪]
用ordinary，common，usual，normal填空
(1)Rabbits and foxes are in the countryside.
(2)Housing prices in Beijing are out of reach for people.
(3)The doctor said the child's temperature was .
(4)The sweethearts in love meet once a week at the place.
(5)She is a(n) girl，and doesn't stand out in a crowd.
(6)Li Qi works hard as and it has paid off.He has got
the first in The Voice of China.
common
ordinary
normal
usual
ordinary
usual
1．(教材P44)The reaction of metals with these substances can be .
(不同的)金属与这些物质的反应可以按顺序排列起来。
put...in order把……按顺序排列/整理；把……安排妥当
All the things in the room were out of order，but she soon put them in order.
房间里的东西摆放得乱七八糟的，但是她很快就把它们收拾整齐了。
put in order
[即时跟踪]
(1)完成句子
①Everything in the kitchen is (井然有序的)．
②My iPhone 6 is (又出故障了)．
(2)单句改错
Uncle Bob put his business affairs in the order before he died.
in good order
out of order again
2．(教材P45) some oil the water.This will keep air out
of the water.
往水中加些油，这将防止空气进入水中。
add...to...往……加入……，把……添加到……
(1)Add your scores up and let's see who will win.
把你们的分数加起来，让我们看一下谁会赢。
(2)His whole education added up to no more than two months.
他接受的全部教育加起来不超过两个月。
Add
to
[即时跟踪]
(1)完成句子
①烟火使节日之夜更加迷人。
Fireworks the attraction of the festival night.
②毫无疑问这是火上浇油。
There is no doubt that it is like oil the fire.
③这些账单加起来正好一百美元。
The bills exactly $100.
added to
adding
to
add up to
(2)单句语法填空
①Two (add) to five is seven.
②His whole school education added up only 2 years because
of his illness.
added
to
1．“分数/百分数＋of＋名词/代词”作主语
(教材P41) of the earth's surface is water.
地球表面的三分之二是水。
Two fifths of the students agree to hold an evening party for their teacher's birthday.
五分之二的同学同意为他们老师的生日举办一个晚会。
Two thirds
[归纳拓展]
“分数/百分数＋of＋名词/代词”作主语，谓语动词的单复数与of后的名词或代词一致。
注意：two thirds 是分数，表达分数时，我们遵循的原则是：分子基数词，分母序数词，分子大于“1”，分母加“ s”。
was drunk
has been done
2．It is＋adj.(for sb) to do sth
(教材P44) think of a world without metals.
很难想象一个没有金属的世界。
(1)It is important for us to grasp a living skill.
对我们来说，掌握一门生活技能是很重要的。
(2)It is a pity that you couldn't come.
你来不了，真遗憾。
It is hard to
[归纳拓展]
(1)It is＋adj.(for sb) to do sth中的it是形式主语，真正的主语是后面的动词不定式。
(2)it作形式主语的常见句型：
①It is＋adj.＋(for/of sb) to do sth
②It is＋adj./n.＋that从句
③It is no good/use doing sth做某事是没有好处/用处的
it is necessary to
It is no good
Ⅰ.单句语法填空
1．What (conclude) can you draw from the evidence
2．He studied hard every day， (aim) at passing the exam.
3．It is obvious that this is a (mix) of egg and orange.
4．This rope is twice longer that one.
5． usual，he got up very early.
conclusions
aiming
mixture
than
As
1．Close the door and the cold air the room.
2．I will my childhood every time I see the picture.
3．Look！Tony，your books are everywhere.Please them
.
4．Please some sugar my coffee.
5．He decided to who had taken his computer.
keep
out of
think of
put
in order
add
to
find out
Ⅲ.完成句子
1．做完实验后，一切东西都要有序的排列在器皿柜中。
After the experiment，everything is in the cupboard.
2．学好英语对我们来说很重要。
It is important .
3．这个国家三分之二的人口是农民。
of the population of the country farmers.
put in order
for us to learn English well
Two thirds
are
4．这个城镇南面坐落着一所学校。
To the south of the town .
5．他的目标是成为一个成功的作家。
He a successful writer.
lies a school
aims to be
Ⅳ.课文语法填空
Metals are very 1. (importantly) in the world.Different metals have different 2. (use)．For example，steel 3. (use) in cars，and iron in 4. (electricity) equipment.When we use metals，it is important 5. (know) how they react 6. different substances，for example，water and oxygen.The 7. (react) of metals with these substances can 8. (put) in order.Potassium，sodium，calcium，magnesium，aluminium and zinc react most,9. iron and copper react 10. (little).
important
uses
is used
electrical
to know
with
reaction
be put
and
least