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(共33张PPT)
Unit 7 The natural world
八年级
译林版2024
上
课文解析二
1.If we don't, the plastic will harm the balance of the ocean ecosystem.
如果我们不这样，塑料将会损害海洋生态系统的平衡。
[用法讲解] if为连词，译为“如果”，常常用来引导条件状语从句，遵循“主将从现”原则，即主句为将来时，从句为一般现在时。
Eg: If it rains tomorrow, I will stay at home.
如果明天下雨，我就呆在家里。
if也可以译为“是否”，用来引导宾语从句，时态随实际情况而定。
Eg: I don't know if it will rain tomorrow.
我不知道明天是否下雨。
[即学即用]
( )If it_______tomorrow, we_______at home.
A.will rain; rain B. rains; stay
C. rains; will stay D. will rain; will stay
C
2.The sun gives light and heat to ocean animals.太阳把光和热给予海洋动物。
[用法讲解] light在此处为形容词，译为“轻的、浅色的、少量的、微弱的”;light也可作可数名词，译为“灯”;light也可为不可数名词，译为“光线”;light也可为动词，译为“点燃”。
Eg: The box isn't heavy, it's light.
这个箱子不重，很轻。
I like light yellow best.
我最喜欢浅黄色。
There was a light rain falling.
外面下着小雨。
Turn off the lights when you leave.
当你离开时把灯关了。
The light came into the room.
光线照进这个屋子。
Let's light the new candle.
让我们点燃新蜡烛吧。
[常见搭配] in the light of...鉴于、根据
Eg: In the light of his remarks, we rejected her offer.
鉴于他的评语，我们拒绝了她的提议。
[即学即用]
_______(light) travels at around 300,000,000 metres per second.
Light
3.Some animals feed on the leaves and the water can keep them healthy.
一些动物以这些叶子为食，水分能使它们保持健康。
[用法讲解]feed为动词时，译为“为提供、喂养”，其过去式为fed，过去分词为fed;feed还可为名词，译为“一餐”。
Eg: I have to feed the cat.
我得喂猫。
The baby needs a feed now.
婴儿现在需要喂奶了。
[常见搭配]feed sth. to sb. = feed sb. with sth.喂某人某物
feed on ...以...为食
feed back反馈
be fed up with ...对...感到厌烦
feed off以某物为能量来源、从某处取食
Eg: She feeds rice to her baby.
= She feeds her baby with rice.
她给她的宝宝喂米饭。
The lion feeds on meat.
狮子以肉为食。
Please feed back your thoughts on the new project.
请反馈你对新项目的想法。
I'm fed up with his constant complaints.
我受够了他没完没了的抱怨。
The speaker fed off theaudience's enthusiasm.
演讲者从听众的热情中汲取能量。
Feed off the shared plate.
从共享餐盘中取食。
[即学即用]
金丝猴以竹的果实和嫩叶为食。
Golden monkeys _______ ______ fruits and young leaves of bamboo.
feed on
4.This kind of fish can find enough space here. 这种鱼在这里能找到足够的空间。
[用法讲解]enough在此处为副词，译为“充分地”，通常放在形容词或副词之后;enough也可作形容词，译为“足够的”，放在名词前作定语。
Eg: He is tall enough to play basketball.
他足够高可以打篮球。
We have enough time to finish the work.
我们有足够的时间来完成这项工作。
[常见搭配] be + 形容词 + enough + for sb.+ to do sth.对某人来说做某事...
Eg: The book is easy enough for you to read.
这本书对你来说很容易读。
[即学即用]
( )Mike is only 15 years old. He is not______ to get a driver's license.
A.old enough B. enough old
C. young enough D. enough young
A
5.Luckily, more and more scientists are paying attention to coral reefs.
幸运地是，越来越多科学家正在注意珊瑚礁。
[用法讲解]attention为不可数名词，译为“注意力、关注”。
Eg: The teacher called the class to attention.
老师引起了全班的注意。
[常见搭配] pay attention to ... 注意...
pay attention to doing sth.注意做某事
Eg: Pay attention to the road while driving.
开车时要注意路况。
Pay attention to listening carefully please.
请注意认真听讲。
[即学即用]
请注意包装上的说明。
Please_______________theinstructions on the package.
pay attention to
6.The area provides food and cover for a lot of wildlife.
这片区域为许多野生动物提供食物和栖息地。
[用法讲解] provide还可译为“给予、供应(信息、服务等) ”。
Eg: The company provides health insurance for its employees.
公司为员工提供健康保险。
[常见搭配] provide sth. for sb. = provide sb. with sth.为某人提供某物
provide against...为防备...而提供/准备
provide for ...抚养、供养、为...做准备
Eg: The school provides textbooks for all students.
学校为所有学生提供课本。
Thecompanyprovidesits employees with health insurance.
公司为其员工提供医疗保险。
We need to provide against the possibility of power outages.
我们需要为可能发生的停电做好准备。
He works hard to provide for his family.
他努力工作以供养他的家人。
The will provides for the distribution of his estate.
遗嘱规定了他的财产分配。
[易混辨析] offer与provide区别:
offer通常指主动提供某物或某服务，带有一定的积极性和自愿性，与job、help等词搭配;
provide则更常用于提出计划、建议或观点，与 with连用。
Eg: I offered to buy her lunch, but she declined.
我提出请她吃午饭，但她拒绝了。
They will provide us with eggs.
他们为我们提供鸡蛋。
[即学即用]
1.政府应该为小企业提供更多的支持。
The government should_________more support ________ small businesses.
( )2.He _______ me a job, but I didn't accept.
A.offers B. offered C. provides D. provided
provide for
B
7.Many birds live in Zhalong all year round, while some go there only for a short stay.
许多鸟类常年栖息在扎龙，而有些鸟类去那里只是短暂停留。
[用法讲解]all year round译为“全年、一年到头”，同义词组为the whole year.
Eg: The weather here is warm all year round.
这里的天气全年都很温暖。
[即学即用]
这些花在温室里全年都盛开。
These flowers bloom _________________ in the greenhouse.
all year round
8.Some people want to make the wetlands smaller in order to have more space for farms and buildings.一些人想缩小湿地面积，以便为农田和建筑腾出更多空间。
[用法讲解] order作名词，可译为“订单、顺序”;order作动词，也可译为“命令、订购”等。
Eg: The books arearrangedin alphabetical order.
这些书按字母顺序排列。
I placed an order for a new computer.
我订购了一台新电脑。
The doctor ordered the patient to rest.
医生命令病人休息。
I ordered 500 pairs of shoes from the factory.
我向这家工厂订购了500双鞋。
[常见搭配]out of order故障或不正常
in order to do sth. (=so that)为了做某事
Eg: The printer is out of order.
这台打印机坏了。
I study hard in order to get a good job.
= I study hard so that I can get a good job.
我努力学习是为了找到好工作。
[即学即用]
为了提高英语，我已经开始了英语课程。
I have started an English course _________________ improve my English.
in order to
9.Tourists may bring trouble to the animals there or ....游客可能会给那里的动物带来麻烦或者...
[用法讲解]trouble为可数名词，译为“困难、烦恼、麻烦事”等，其复数形式为troubles; trouble还可为动词，译为“使忧虑、使苦恼”。
Eg: The student's failing grades troubled his parents deeply.
这个学生成绩不及格使其父母深感忧虑。
Scientists are putting a good face on the troubles.
科学家们对这些困难似乎不以为意。
I'm having trouble finding anything new to say on this subject.
在这个课题上要提出什么新看法，我有困难。
[常见搭配] have trouble (in) doing sth.在做某事方面有困难
get into trouble陷入麻烦
get out of trouble走出困境
make trouble惹事生非
be in trouble处于困境中
take the trouble不怕费力
Eg: I have trouble understanding the instructions.
他理解这些指示有困难。
She got into trouble with the law.
她惹上了官司。
With his help, I got out of trouble quickly.
在他的帮助下，我很快走出了困境。
He always makes trouble for others.
他总是给别人惹麻烦。
He is in trouble and needs our help.
他遇到了麻烦，需要我们的帮助。
He took the trouble to explain the problem to me.
他不怕费力地向我解释了这个问题。
[即学即用]
1.I have trouble___________(understand) this passage.
2.别惹事，否则你会有麻烦的。
Don't ________ ________, or you will _______________.
understanding
make trouble
get into trouble
10.Reduce the number of ... visiting wetlands.减少参观湿地的...数量。
[用法讲解]number为名词，译为“号码、数字、数量”;number也可为动词，译为“编号、计算”。
Eg: What's your number
你号码是多少
Number the pages in the book.
给这本书的每一页编号。
Please number the total people.
请统计一下总人数。
[常见搭配]“a number of + 可数名词复数”译为“许多...”，作主语时，谓语动词用复数;
“the number of +可数名词复数”译为“...的数量”，作主语时，谓语动词用单数。
Eg: A number of students in this school are from England.
这所学校许多学生来在英国。
Thenumber of students in this school is 2000.
这所学校的学生数量是2000.
[即学即用]
( ) _______ sheep ______ eating grass on the hill.
A.The number of; is B. The number of; are
C. A number of; is D. A number of; are
D
11.We can encourage people to protect forests too.我们还可以鼓励人们保护森林。
[用法讲解] encourage为动词，译为“鼓励”。
Eg: I have always encouraged him.
我一直鼓励他。
[常见搭配]encourage sb. to do sth.鼓励某人做某事
Eg: My parents always encourage me to follow my dreams.
我的父母总是鼓励我追随自己的梦想。
[派生词]其名词形式为encouragement，译为“鼓励”
Eg: She was given every encouragement to try something new.
她得到充分的鼓励去尝试新事物。
[即学即用]
Our teacher often encourages us _______(speak) English as much as possible.
to speak
12.It is also a good idea to tell people how to protect the ocean.
向人们宣传如何保护海洋也是个好主意。
[用法讲解]“It is a good idea to do sth.”译为“做某事是一个好主意”，其中it为形式主语，to do为真正主语。
Eg: It’s a good idea to go for a walk after dinner.
晚饭后去散步是个好主意。
[即学即用]
看英语电影来提高你的听力是个好主意。
_____________________watch English movies to improve your listening.
It's a good idea to
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Unit 7 The natural world 课文解析二
1.If we don't, the plastic will harm the balance of the ocean ecosystem.
如果我们不这样，塑料将会损害海洋生态系统的平衡。
[用法讲解] if为连词，译为“如果”，常常用来引导条件状语从句，遵循“主将从现”原则，即主句为将来时，从句为一般现在时。
Eg: If it rains tomorrow, I will stay at home.
如果明天下雨，我就呆在家里。
if也可以译为“是否”，用来引导宾语从句，时态随实际情况而定。
Eg: I don't know if it will rain tomorrow.
我不知道明天是否下雨。
[即学即用]
( )If it_______tomorrow, we_______at home.
A.will rain; rain B. rains; stay
C. rains; will stay D. will rain; will stay
答案: C
2.The sun gives light and heat to ocean animals.太阳把光和热给予海洋动物。
[用法讲解] light在此处为形容词，译为“轻的、浅色的、少量的、微弱的”;light也可作可数名词，译为“灯”;light也可为不可数名词，译为“光线”;light也可为动词，译为“点燃”。
Eg: The box isn't heavy, it's light.
这个箱子不重，很轻。
I like light yellow best.
我最喜欢浅黄色。
There was a light rain falling.
外面下着小雨。
Turn off the lights when you leave.
当你离开时把灯关了。
The light came into the room.
光线照进这个屋子。
Let's light the new candle.
让我们点燃新蜡烛吧。
[常见搭配] in the light of...鉴于、根据
Eg: In the light of his remarks, we rejected her offer.
鉴于他的评语，我们拒绝了她的提议。
[即学即用]
_______(light) travels at around 300,000,000 metres per second.
答案: Light
3.Some animals feed on the leaves and the water can keep them healthy.
一些动物以这些叶子为食，水分能使它们保持健康。
[用法讲解]feed为动词时，译为“为提供、喂养”，其过去式为fed，过去分词为fed;feed还可为名词，译为“一餐”。
Eg: I have to feed the cat.
我得喂猫。
The baby needs a feed now.
婴儿现在需要喂奶了。
[常见搭配] feed sth. to sb. = feed sb. with sth. 喂某人某物
feed on ... 以...为食
feed back 反馈
be fed up with ...对...感到厌烦
feed off 以某物为能量来源、从某处取食
Eg: She feeds rice to her baby.
= She feeds her baby with rice.
她给她的宝宝喂米饭。
The lion feeds on meat.
狮子以肉为食。
Please feed back your thoughts on the new project.
请反馈你对新项目的想法。
I'm fed up with his constant complaints.
我受够了他没完没了的抱怨。
The speaker fed off the audience's enthusiasm.
演讲者从听众的热情中汲取能量。
Feed off the shared plate.
从共享餐盘中取食。
[即学即用]
金丝猴以竹的果实和嫩叶为食。
Golden monkeys _______ ______ fruits and young leaves of bamboo.
答案:feed on
4.This kind of fish can find enough space here. 这种鱼在这里能找到足够的空间。
[用法讲解] enough在此处为副词，译为“充分地”，通常放在形容词或副词之后;enough也可作形容词，译为“足够的”，放在名词前作定语。
Eg: He is tall enough to play basketball.
他足够高可以打篮球。
We have enough time to finish the work.
我们有足够的时间来完成这项工作。
[常见搭配] be + 形容词 + enough + for sb.+ to do sth.对某人来说做某事...
Eg: The book is easy enough for you to read.
这本书对你来说很容易读。
[即学即用]
( )Mike is only 15 years old. He is not______ to get a driver's license.
A.old enough B. enough old
C. young enough D. enough young
答案: A
5.Luckily, more and more scientists are paying attention to coral reefs.
幸运地是，越来越多科学家正在注意珊瑚礁。
[用法讲解] attention为不可数名词，译为“注意力、关注”。
Eg: The teacher called the class to attention.
老师引起了全班的注意。
[常见搭配] pay attention to ... 注意...
pay attention to doing sth.注意做某事
Eg: Pay attention to the road while driving.
开车时要注意路况。
Pay attention to listening carefully please.
请注意认真听讲。
[即学即用]
请注意包装上的说明。
Please_______________the instructions on the package.
答案:pay attention to
6.The area provides food and cover for a lot of wildlife.
这片区域为许多野生动物提供食物和栖息地。
[用法讲解] provide还可译为“给予、供应(信息、服务等) ”。
Eg: The company provides health insurance for its employees.
公司为员工提供健康保险。
[常见搭配] provide sth. for sb. = provide sb. with sth.为某人提供某物
provide against...为防备...而提供/准备
provide for ... 抚养、供养、为...做准备
Eg: The school provides textbooks for all students.
学校为所有学生提供课本。
The company provides its employees with health insurance.
公司为其员工提供医疗保险。
We need to provide against the possibility of power outages.
我们需要为可能发生的停电做好准备。
He works hard to provide for his family.
他努力工作以供养他的家人。
The will provides for the distribution of his estate.
遗嘱规定了他的财产分配。
[易混辨析] offer与provide区别:
offer通常指主动提供某物或某服务，带有一定的积极性和自愿性，与job、help等词搭配;
provide则更常用于提出计划、建议或观点，与 with连用。
Eg: I offered to buy her lunch, but she declined.
我提出请她吃午饭，但她拒绝了。
They will provide us with eggs.
他们为我们提供鸡蛋。
[即学即用]
1.政府应该为小企业提供更多的支持。
The government should_________more support ________ small businesses.
( )2.He _______ me a job, but I didn't accept.
A.offers B. offered C. provides D. provided
答案:1. provide... for 2.B
7.Many birds live in Zhalong all year round, while some go there only for a short stay.
许多鸟类常年栖息在扎龙，而有些鸟类去那里只是短暂停留。
[用法讲解] all year round译为“全年、一年到头”，同义词组为the whole year.
Eg: The weather here is warm all year round.
这里的天气全年都很温暖。
[即学即用]
这些花在温室里全年都盛开。
These flowers bloom _________________ in the greenhouse.
答案:all year round
8.Some people want to make the wetlands smaller in order to have more space for farms and buildings.一些人想缩小湿地面积，以便为农田和建筑腾出更多空间。
[用法讲解] order作名词，可译为“订单、顺序”;order作动词，也可译为“命令、订购”等。
Eg: The books are arranged in alphabetical order.
这些书按字母顺序排列。
I placed an order for a new computer.
我订购了一台新电脑。
The doctor ordered the patient to rest.
医生命令病人休息。
I ordered 500 pairs of shoes from the factory.
我向这家工厂订购了500双鞋。
[常见搭配] out of order 故障或不正常
in order to do sth. (=so that)为了做某事
Eg: The printer is out of order.
这台打印机坏了。
I study hard in order to get a good job.
= I study hard so that I can get a good job.
我努力学习是为了找到好工作。
[即学即用]
为了提高英语，我已经开始了英语课程。
I have started an English course _________________ improve my English.
答案:in order to
9.Tourists may bring trouble to the animals there or ....游客可能会给那里的动物带来麻烦或者...
[用法讲解] trouble为可数名词，译为“困难、烦恼、麻烦事”等，其复数形式为troubles; trouble还可为动词，译为“使忧虑、使苦恼”。
Eg: The student's failing grades troubled his parents deeply.
这个学生成绩不及格使其父母深感忧虑。
Scientists are putting a good face on the troubles.
科学家们对这些困难似乎不以为意。
I'm having trouble finding anything new to say on this subject.
在这个课题上要提出什么新看法，我有困难。
[常见搭配] have trouble (in) doing sth.在做某事方面有困难
get into trouble 陷入麻烦
get out of trouble 走出困境
make trouble 惹事生非
be in trouble 处于困境中
take the trouble 不怕费力
Eg: I have trouble understanding the instructions.
他理解这些指示有困难。
She got into trouble with the law.
她惹上了官司。
With his help, I got out of trouble quickly.
在他的帮助下，我很快走出了困境。
He always makes trouble for others.
他总是给别人惹麻烦。
He is in trouble and needs our help.
他遇到了麻烦，需要我们的帮助。
He took the trouble to explain the problem to me.
他不怕费力地向我解释了这个问题。
[即学即用]
1.I have trouble___________(understand) this passage.
2.别惹事，否则你会有麻烦的。
Don't ________ ________, or you will _______________.
答案:1. understanding 2. make trouble; get into trouble
10.Reduce the number of ... visiting wetlands.减少参观湿地的...数量。
[用法讲解]number为名词，译为“号码、数字、数量”;number也可为动词，译为“编号、计算”。
Eg: What's your number
你号码是多少
Number the pages in the book.
给这本书的每一页编号。
Please number the total people.
请统计一下总人数。
[常见搭配] “a number of + 可数名词复数”译为“许多...”，作主语时，谓语动词用复数;
“the number of +可数名词复数”译为“...的数量”，作主语时，谓语动词用单数。
Eg: A number of students in this school are from England.
这所学校许多学生来在英国。
The number of students in this school is 2000.
这所学校的学生数量是2000.
[即学即用]
( ) _______ sheep ______ eating grass on the hill.
A.The number of; is B. The number of; are
C. A number of; is D. A number of; are
答案:D
11.We can encourage people to protect forests too.我们还可以鼓励人们保护森林。
[用法讲解] encourage为动词，译为“鼓励”。
Eg: I have always encouraged him.
我一直鼓励他。
[常见搭配] encourage sb. to do sth.鼓励某人做某事
Eg: My parents always encourage me to follow my dreams.
我的父母总是鼓励我追随自己的梦想。
[派生词]其名词形式为encouragement，译为“鼓励”
Eg: She was given every encouragement to try something new.
她得到充分的鼓励去尝试新事物。
[即学即用]
Our teacher often encourages us _______(speak) English as much as possible.
答案: to speak
12.It is also a good idea to tell people how to protect the ocean.
向人们宣传如何保护海洋也是个好主意。
[用法讲解] “It is a good idea to do sth.”译 为“做某事是一个好主意”，其中it为形式主语，to do为真正主语。
Eg: It’s a good idea to go for a walk after dinner.
晚饭后去散步是个好主意。
[即学即用]
看英语电影来提高你的听力是个好主意。
________________________ watch English movies to improve your listening.
答案:It's a good idea to
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