Unit 4 The Wonders of Nature (Period 6) 单元复习课(共42张PPT) 人教版(2024)八年级下册

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Unit 4 The Wonders of Nature (Period 6) 单元复习课(共42张PPT) 人教版(2024)八年级下册

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(共42张PPT)
The Wonders of Nature (Period 6)
单元复习课
Free talk
What natural wonder do you like Describe it and talk about it.
Look and say
Compare facts about these three rivers.
The Nile 6,671 kilometers long
The Yangtze River 6,300 kilometers long
The Yellow River 5,464 kilometers long
话题梳理
The Wonders of Nature
Natural wonders
Nile River, Angel Falls, Mount Qomolangma, Dead Sea, Sahara Desert, Mariana Trench, Yangtze River, Yellow River, Taklimakan Desert, Mount Kilimanjaro, Inga Falls, East African Rift Valley, Victoria Falls, Lake Baikal, Great Barrier Reef
Facts about
natural wonders
square kilometre, above/below sea level, surface, depth, unusual, bottom, mile, degree, changeable, include, sand, coast, alive, located in/on, southern, northern, northeastern
It is about 6,300 kilometres long.
It is about 9,000,000 square kilometres in size.
It is about 11,000 metres deep.
Its surface covers 31,500 square kilometres.
考点突破
1.below
知识复现
(1)作介词,意为“在(或到)······下面;少于;低于”。
表示位置低于某物,不接触,不一定在正下方,反义词是above。
(2)作副词,意为“在(或到)下面”。
考点突破
1.below
知识复现
(3)below与under
below “在....下方”,但不一定是正下方,与above 相对
under 通常表示“垂直向下;在....正下方”,与over 相对
①我听到窗户下面的院子里有人在说话。
I could hear voices in the courtyard ________ ________ ________.
②猫在桌子下面。
The cat was ________ ________ ________.
考点突破
1.below
below my window
under the table
考点突破
2.research
知识复现
(1)作动词或名词,意为“研究;调查”等。
① do research 做调查,做研究。
② do research into/on 对······进行调查,研究
(2)researcher是名词,意为“研究者,研究员”。
①Animal __________(research) have discovered the number of endangered animals in Yunnan Province is increasing.
②他忙于做研究。
He is busy ________ ________.
researchers
doing research
考点突破
2.research
考点突破
3.unusual
知识复现
(1)作形容词,意为“特别的;不寻常的”,其反义词为usual,意为“平常的;通常的”。
(2)其副词形式为unusually,意为“特别地;不寻常地”。
①我们看到一只长着蓝色羽毛的不寻常的鸟。
We saw ________ ________ ________ with blue feathers.
②Jim has gone to bed This is very ________(usual). He always stays up late.
an unusual bird
unusual
考点突破
3.unusual
4.bottom
考点突破
知识复现
作名词,意为“底部;最下部” 。
at the bottom of ...“在······的底部”,其反义短语为on the top of ...,意为“在······的上面”。
①井底有一只青蛙。
There is a frog ________ ________ ________ ________ the well.
②蛋糕上面是什么?
What’s ________ ________ ________ ________ the cake
at the bottom of
on the top of
4.bottom
考点突破
考点突破
5.development
知识复现
(1)作名词,意为“发展;壮大” 。
常用短语:the development of ... ······的发展。
(2)其相关词汇有:
①develop [动词] 发展,成长
②developing [形容词] 发展中的
③developed [形容词] 发达的
①It is expected to play a more important role in our country’s ___________(develop).
②随着信息技术的发展,我们可以很容易地得到信息。
________ ________ ____________ ________ IT, we can get information easily.
With the development of
考点突破
5.development
development
知识
复现
(1)作形容词,意为“北部的;向北的” 。
直接加在地名或区域名称前,表示“······的北部”,其反义词为southern,意为“南部的;向南的”。
(2)其名称形式为north,意为“北部;北方”。其反义词为south,意为“南部;南方”。
考点突破
6.northern
知识
复现
考点突破
6.northern
①中国的北部冬天很冷。
The ________ part of China is cold in winter.
②在南方的村庄,人们种很多水稻。
In ________ villages, people grow a lot of rice.
northern
考点突破
6.northern
southern
考点突破
7.one of the+形容词最高级+可数名词复数
知识复现
此结构表示“最······的······之一”。此结构作主语时,谓语动词用第三人称单数形式。
①学校里最受欢迎的科目之一是科学。
________ ________ ________ ________ ________ ________ in school is science.
②So, of course, one of my best memories ________(be) when I got to see a type of whale called the Southern Right Whale in Argentina.
One of the most popular subjects
考点突破
7.one of the+形容词最高级+可数名词复数
was
考点突破
8.condition
知识复现
(1)作名词,意为“状态;境况” 。
常用搭配:in bad/good/excellent condition处于糟糕的/良好的/极佳的状态;out of condition健康状况不佳。
(2)作名词,还意为“环境;条件;境况(常用复数形式)” 。
①我爷爷76岁了,他的健康状况依然很好。
My grandpa is 76 years old, and he is still ________ ________ ________.
②他们正努力改善自己的生活条件。
They’re trying to improve their ________ _________.
in excellent condition
living conditions
考点突破
8. condition
考点突破
9.risk
知识复现
(1)作动词,意为“使······冒风险(或面临危险)”。
常用搭配:risk doing sth 冒着······的风险。
(2)作名词,意为“危险;风险”。
常用搭配:常用搭配:take a risk/risks 冒险;the risk of ... ······的风险。
(3)其形容词形式为risky,意为“有危险(或风险)的”。
①他帮助了一位残疾妇女,冒着失去自己生命的风险。
He helped a disabled woman, ________ ________ his own life.
②你要么冒险继续等待,要么现在就放弃。
You can either ________ ________ to keep on waiting or give up now.
risking losing
take risks
考点突破
9.risk
考点突破
10.simply
知识复现
(1)作副词,意为“仅仅;只;简单地”。
(2)其形容词形式为simple,意为“简单的,简易的;完全的,不折不扣的”。
①Some people don’t like the fruit ________ (simple) because of smell.
②晚饭前摆餐具是我家的简单任务。
Setting the table is ________ ________ ________ before dinner in my family.
a simple task
考点突破
10.simply
simply
考点突破
11.include
知识复现
(1)include作动词,意为“包含;包括”。
(2)including作介词,意为“包括;包含”。
①Chinese tea culture ________(include) the Chinese way of dealing with the world.
②包括你在内有10个人。
There are ten people _________ you.
includes
including
考点突破
11.include
知识复现
(1)作形容词,意为“活着;在世;有活力”。
(2)alive, living与lively
考点突破
12.alive
alive “活着的”,通常作表语,有时也可作后置定语,但不能作前置
living “有生命的;活(着)的”,可作前置定语或表语
lively “生动的;活泼的”,可作定语或表语
①我们不知道他们是死是活。
We don’t know whether they are ________ or dead.
②动物和植物都是生物。
Both animals and plants are ________ things.
③她在舞会上非常活跃。
She was very ________ at the dancing party.
alive
living
lively
考点突破
12.alive
①He is ________ (brave) than me.
②哪件毛衣更便宜,红色的还是蓝色的?
________ ________ ________ ________, the red one or the blue one
③天气正在变得越来越暖和。
The weather is getting ________ ________ ________.
④在这两个男孩中吉姆的身体较弱。
Jim is ________ ________ of the two boys.
形容词、副词的比较级和最高级
braver
Which sweater is cheaper
warmer and warmer
the weaker
语法突破
⑤________ he practices, ________ he does.
A.Much; better B.The more; the best
C.The more; the better D.The more; the well
⑥Mr Smith is __________ (rich) man in this office.
⑦Jenny is one of ________ girls in our school.
A.creative B.the creative
C.much creative D.the most creative
形容词、副词的比较级和最高级
the richest
语法突破
⑧太阳、月球和地球,哪一个最大?
________ ________ ________ ________, the sun, the moon or the earth
⑨这个故事比那个有趣得多。
This story is ________ ________ ___________ than that one.
⑩我们学校比你们学校大4倍。
Our school is ________ ________ ________ than yours.
形容词、副词的比较级和最高级
Which is the biggest
much more interesting
four times larger
语法突破
形容词、副词的比较级和最高级
知识复现
(1)常见的比较级结构:
① “比较级+than …”意为“比······更······”;
② “Who/Which+谓语+比较级, A or B ”意为“谁/哪一个
更······ ,A还是B?”;
③ “比较级+and+比较级”意为“越来越······”;
④ “the+比较级 …, the+比较级 …”意为“越······ ,就越······”;
⑤ “the+比较级+of the two …”意为“两个······之中更/较······
的那一个” 。
语法突破
形容词、副词的比较级和最高级
知识复现
(2)常见的最高级结构:
① “最高级+in/of ...”意为“在······中最······”;
② “one of the+形容词最高级+可数名词复数”意为“最······
的······之一” ;
③ “Who/Which+谓语+最高级, A, B or C ”意为“谁/哪一个
最······ ,A,B还是C?”。
语法突破
形容词、副词的比较级和最高级
知识复现
(3)修饰形容词或副词的比较级可以用 much、a lot、a little、far、even 等,但不能用 very。
(4)比较级有时也可用于倍数表达:“倍数(once/twice/three times …)+比较级+than …”意为“比······更······几倍”。
语法突破
大数字
知识复现
英语的数字是三位一划分,在读之前先划分好,然后确定逗号的个数。按逗号个数读,如:
(1)只有一个逗号,用thousand
4,821读作: four thousand, eight hundred and twenty-one
(2)两个逗号,用million 和 thousand
1,234,567读作:one million, two hundred and thirty-four thousand, five hundred and sixty-seven
语法突破
大数字
知识复现
英语的数字是三位一划分,在读之前先划分好,然后确定逗号的个数。按逗号个数读,如:
(3)三个逗号,用billion,million 和 thousand
1,123,456,789读作:one billion, one hundred and twenty-three million, four hundred and fifty-six thousand, seven hundred and eighty-nine
语法突破
话题梳理
The Wonders of Nature
自然的奇迹
自然奇观事实
自然奇观名称
探索大自然
(1) below
(2) research
(3) unusual
(4) bottom
(5) development
(6) northern
(7) one of the+形容词最高级+
可数名词复数
要点回顾
(8) condition
(9) risk
(10) simply
(11) include
(12) alive
(13) 形容词、副词的比较级
和最高级
(14) 大数字
情境导入
假设学校即将举办一场“自然奇观探索之旅”展览活动,邀请同学们担任“小小自然探索家”,为观众介绍自己最喜爱的自然奇观。同学们需要设计一张海报来展示自然奇观的美丽与独特之处,并用英文向观众介绍这个自然奇观的特征以及人类探索它的意义。请运用本单元所学相关知识,参考下面思维导图,完成宣讲稿。
情境导入

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