资源简介

(共42张PPT)
Unit 1 Look it up!
第2课时 Reading 阅读
课堂精讲 课文与重点语句解析
一、课本原文（补充译文）
Leonardo da Vinci
Leonardo da Vinci (1452 ~ 1519) was an Italian painter, inventor, musician, engineer and scientist. Da Vinci was extremely intelligent,
and he was unusually talented in many different fields. He was a true genius, and his paintings and inventions changed the way we think about art and science.
Leonardo da Vinci was born in the countryside in Italy. From an early age, he showed great intelligence and artistic talent. As he grew older, he learnt to do many different things. His paintings are very famous, and one, the Mona Lisa, is perhaps the most famous painting in the world.
He also had many inventions. For example, his notebooks include some interesting drawings of flying machines and other vehicles.
—Culture and arts
列奥纳多·达·芬奇
列奥纳多·达·芬奇（1452年 ~ 1519年）是一位意大利画家、发明家、音乐家、工程师和科学家。达·芬奇极其聪明，他_______________________________。他是一位真正的天才，他的画作和发明______________________________。
在众多领域都展现出了非凡的才华
改变了我们对艺术和科学的认知
列奥纳多·达·芬奇出生于意大利的乡村。从很小的时候起，___________________________________。随着年龄的增长，他学会了做许多不同的事情。他的画作非常著名，其中《蒙娜丽莎__________________
_________。他还有许多发明。例如，他的笔记本里就含有一些飞行器和其他交通工具的有趣的设计图。
——文化与艺术
他就展现出了卓越的才智和艺术天赋
可能是世界上最著名
的画作
Dinosaurs
Dinosaurs are a type of prehistoric animal. They are related to crocodiles, snakes and lizards. They are also the ancestors of today’s birds. Dinosaurs first appeared around 245 million years ago. The word “dinosaur” comes from two Greek words, and it means “terrible lizard”.
Dinosaurs lived on land and walked on either two or four legs. Many dinosaurs ate plants, but some ate meat. Dinosaurs came in different sizes. Some were as small as chickens, and others were as big as ten elephants.
恐龙
恐龙是_______________。它们与鳄鱼、蛇和蜥蜴属于同一种类。它们也是当今鸟类的祖先。恐龙最早出现于约2.45亿年前。“恐龙”一词由两个希腊词组成，意为“可怕的蜥蜴”。
一种史前动物
恐龙生活在陆地上，用两条或四条腿行走。许多恐龙以植物为食，但有些则以肉为食。____________
________。有的像鸡一样小，有的则有十头大象那么大。
恐龙体形有
差异
Dinosaurs ruled the Earth for more than 180 million years. About 66 million years ago, dinosaurs suddenly died out. Scientists are not completely sure why. However, they are learning more and more about dinosaurs by studying their fossils.
—The living world
恐龙__________________________。大约 6 600万年前，________________。科学家们______________
____________________。然而，他们通过研究恐龙化石，对恐龙有了越来越多的了解。
——生命世界
统治地球长达1.8亿年之久
恐龙却突然灭绝
并不完全确定
（恐龙灭绝的）原因
二、考点精讲
1. As he grew older, he learnt to do many different things.随着年龄的增长，他学会了做许多不同的事情。
解析
句中 as 引导时间状语从句，意为“随着”，强调动作同时发生或渐进的过程。
举例
As the weather got colder, people put on thicker coats. 随着天气变冷，人们穿上了更厚的外套。
拓展
as 还可以引导原因状语从句，意为“因为”；引导方式状语从句，意为“按照”。
举例
As it was raining, we cancelled the outdoor picnic. 因为下雨，我们取消了户外野餐。
Do as the instructions say, or the machine might break. 按照说明书操作，否则机器可能会损坏。
运用
(1) ________ autumn arrives, leaves on the trees turn yellow. (语境填词)
(2) 翻译下列句子
① 随着太阳升起，鸟儿开始高声歌唱。
_______________________________________________
As
As the sun rises, the birds begin to sing loudly.
② 她按照妈妈多年前教的方法烹饪这道菜。
_______________________________________________
③ 他没去参加聚会，因为他要准备考试。
_______________________________________________
_______________________________________________
She cooked the dish as her mother taught her years ago.
He didn’t go to the party as he had to prepare for the exam.
2. Dinosaurs lived on land and walked on either two or four legs. 恐龙生活在陆地上，用两条或四条腿行走。
解析
either ... or ... 是并列连词，意为“要么……要么……；不是……就是……”，表示二选一。当其连接并列主语时，谓语动词需遵循“就近原则”，即谓语动词的单复数与 or 后的名词或代词保持数的一致。
举例
I either run or swim after school. 我放学后不是跑步就是游泳。
运用
(1) ________ you ________ Lucy can join the club, because we need only one person.
A. Not only; but also
B. Either; or
C. Neither; nor
B
(2) Either the birds or the cat ____________ (eat) the food we put in the bowl in the garden every morning.
Either the teacher or the students are wrong. 要么老师错了，要么学生错了。
Either the students or the teacher is wrong. 要么学生错了，要么老师错了。
eats
(3) 晚上我要么看电视，要么看书。（汉译英）
_______________________________________________
At night, I either watch TV or read books.
3. Some were as small as chickens, and others were as big as ten elephants. 有的像鸡一样小，有的则有十头大象那么大。
解析
some ... others ... 意为“一些……另一些……；有的……有的……”，此处 others 相当于 other dinosaurs。
as ... as ... 意为“像……一样……”，两个 as 中间用形容词或副词原级，其否定形式是 not so/as ... as ...，表示“不如……那样……”。
举例
After school, some students play basketball, and others play football. 放学后，一些学生打篮球，另一些学生踢足球。
The blue shirt is as expensive as the red one. 这件蓝色衬衫和那件红色衬衫一样贵。
The film is not so/as interesting as I thought. 这部电影没有我想象的那么有趣。
运用
(1) The strawberry cake tastes ________ delicious ________ the one my mum makes.
A. as; as
B. so; as
C. such; as
A
(2) Tom ________ fast ________ his brother. He always loses the race.
A. doesn’t run so; than
B. runs so; as
C. doesn’t run so; as
C
(3) 公园里，有的人在遛狗，有的人在打羽毛球。（汉译英）
_______________________________________________
_______________________________________________
In the park, some people are walking their dogs, and others are playing badminton.
4. Scientists are not completely sure why. 科学家们并不完全确定（恐龙灭绝的）原因。
解析
句中 why 作为宾语从句的连接词，其后的完整内容“dinosaurs suddenly died out”因避免重复而被省略。其他疑问词（如 when、how、where）在引导宾语从句时，同样适用这一省略规则。
举例
I want to know why she left without saying goodbye. 我想知道她为什么不辞而别。
He will fix it, but I don’t know how. 他会修好它的，但我不知道（他）会如何修。
运用
(1) He asked ____________ I didn’t answer his call yesterday.（语境填词）
(2) She went somewhere, but I don’t know ________.
A. how B. why C. where
(3) 他会回来的，但我不知道什么时候。（汉译英）
_______________________________________________
why
C
He will be back, but I don’t know when.
课堂精练
I. 课文理解（请认真阅读课文 Reading 部分的文章，完成下列题目）
( ) 1. Which of the following is in Leonardo da Vinci’s notebooks
A. Drawings of computers.
B. Drawings of flying machines.
C. Models of mobile phones.
D. Models of robots.
B
( ) 2. From what can we learn about dinosaurs according to the passage
A. The ancient paintings.
B. The early climate.
C. Their fossils.
D. The early human activities.
C
( ) 3. Which of the following is TRUE according to the passage
A. Leonardo da Vinci was 67 years old when he passed away.
B. Leonardo da Vinci’s most famous painting is The Last Supper.
C. Dinosaurs lived on Earth for more than 245 million years.
D. Most dinosaurs lived in the water.
A
II. 翻译下列短语
1. 在……方面有天赋 ____________________
2. 学会做某事 ____________________
3. 一种 ____________________
4. 史前动物 ____________________
be talented in
learn to do sth.
a type of
prehistoric animal
5. 与……属于同一种类 ____________________
6. 要么……要么…… ____________________
7. 像……一样…… ____________________
8. 灭绝 ____________________
be related to
either ... or ...
as ... as ...
die out
III. 课文语法填空
根据所学课文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。
Leonardo da Vinci
Leonardo da Vinci was 1. ____________ Italian painter, inventor, musician, engineer and scientist.
an
He was very 2. ____________ (intelligence). As a true genius, his paintings and inventions changed the way we think about art and science. He was born in the countryside and showed great intelligence and artistic 3. ____________ (able) from a young age. His paintings 4. ____________ (be) very famous and he also had a lot of inventions.
intelligent
ability
are
Dinosaurs
Dinosaurs are a type of prehistoric animal 5. ____________ (live) about 245 million years ago. They walked on either two 6. ____________ four legs. Many dinosaurs fed 7. ____________ plants but some ate meat. Dinosaurs came in different sizes — some were as small as chickens, and others were as big as ten elephants.
living
or
on
Dinosaurs ruled the Earth for more than 180 million years. However, they died out 8. ____________ (sudden) and nobody knows why.
suddenly
THANKS
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