Unit 1 Nature in the balance Reading课件(共16张PPT)-译林版(2019)必修第三册

(共16张PPT)
B3U1 Reading
----Important sentences
Revision:
1. a sea of (L1)
2. (be) alive with (L1)
3. play a significant role/part in(L2)
4. maintain the balance of (L3)
5. with an area of... (L5)
6. more than half the size of(L6)
7. in length (L8)
8. biodiversity (L10)
9.be made up of (L17)
10. be home to (L19)
大量的，大片的
充满，到处都是
在...中扮演重要角色
保持...的平衡
面积为...
超过...面积的一半
在长度上
生物多样性
由...组成
是...的家园
11. living things (L20)
12. food chain (L24)
13. feed on (L24-25)
14. in turn (L26)
15. a tiny army of (L27)
16. break down (L28)
17. breathe life into (L30)
18. be known as (L31)
19. treasure house (L32)
20. due to (L35)
21. afford to do sth. (L37)
生物
食物链
以...为食
相应地
一小群...
使分解（成）
给...带来起色
被称作，被认为是
宝库，宝地
由于，因为
承担/支付得起做某事
1. The Amazon River, from which the rainforest
gets its name, is close to 6,400 kilometres in
length --- roughly 100 kilometres longer than the
Yangtze River. (Line 7-9 )
非限制性定语从句
be close to 接近; 靠近; 亲近; 临近
翻译：亚马孙雨林得名于亚马孙河，亚马孙河长接近6400千米，比长江还长约100千米。
分析：句中from which为“介词+关系代词”引导的_________________________,修饰先行词____________________
非限制性定语从句
The Amazon River
【小试牛刀】
1. He opens a door through_______ our imagination enters a new world, a world of love, beauty and heroism. (必修二U4 课文原句 )
2. The professor, from _________ we learned a lot, retired last year.
“介词+关系代词”引导的定语从句
which
whom
思考：此结构中介词如何确定？
Summary:此结构中的关系代词，先行词指物时关系代词用_________,指人时则用___________.
which
whom
“介词＋关系代词”引导非限制性定语从句
EX.: ①Do you still remember the day ________ which we met for the first time
②In the dark street, there wasn’t a single person _____ whom she could turn for help.
③The colorless gas, ________ which we can’t live, is called oxygen.
介词的确定要遵循三点原则：
(1)依据与先行词搭配；
(2)依据定语从句中动词或形容词的习惯搭配;
(3)依据定语从句的意义来确定。
on
to
without
一先、二动、三意义
介词+关系代词在应用文写作中的运用
1.多亏你慷慨的帮助，没有你的帮助我就不会取得这么大的进步。(thanks to , wouldn't have done) 【感谢信】
2.所有师生都高度评价了这次活动，通过这个活动我们对中国传统文化有了更好的了解。(think /speak highly of, have a better understanding of...) 【英文报道】
Thanks to your generous help, without which I wouldn't have made such great progress.
All the teachers and students think highly of the activity, through which we have a better understanding of traditional Chinese culture.
2. With an area of around million square kilometers, the Amazon rainforest is more than half the size of China. （Line 6）
倍数表达法
翻译：亚马逊的面积约为600万平方千米，比中国国土面积的一半还要大。
1）The Earth is 49 times as large as the Moon.
2) This tree is three times as tall as that one.
Observe the following sentences：
倍数+as+形容词/副词原级+as..
3)The Earth is 48 times larger than the Moon.
4) This tree is twice taller than that one.
倍数+形容词/副词比较级+than...
5)This gallery is twice the size of that one.
6)This river is three times the length of that one
倍数+the size/ /length/width/height/...+of+...
EX:一句多译：这条河的长度是那条河的四倍。
This river is four times the length of that one.
This river is four times as long as that one.
This river is three times longer than that one.
Summary: 倍数的表达方式：
A+be+倍数+the+名词（size/length/width/height）+of+B.
A+be+倍数+as+形容词/副词原级+as+B.
A+be+(n-1)倍数+比较级+than B.
3.Above that is the mass of leaf litter on the dark forest floor. (L16)
表语前置，above在句首引起完全倒装
分析：这是一个________句，主语是________________________________________,is是___________,句首的介词短语Above that作_______.
正常语序为：___________________________________________________________________________________
“凋落的树叶；落叶层”
翻译：往上是阴暗森林地表厚实的落叶层.
介词短语作后置定语
倒装
the mass of leaf litter on the dark forest floor
系动词
表语
The mass of leaf litter on the dark forest floor is above that.
当here, there, now, then, out, in, into, down, up, behind, away等表示地点、时间、方位的副词或介词短语置于句首，且主语是名词时，句子用完全倒装。谓语动词常用：come , go, be, exist, lie, sit, stand等。
EX.1. Behind every book _____a man, behind the man ____ the race, and behind the race ______the natural and social environments. (必修二U4课文原句)
2. Of equal importance _____good study habits, useful skills and a positive attitude. (必修一U1课文原句)
3. (译) A few weeks later, when I almost forgot the contest, there came the news. (2023 新课标I卷读后续写)
4. ________________________________, carrying the breakfast they had made. (2021 新高考I卷读后续写)
双胞胎端着他们做的早餐上楼去了。
is
is
are
are
Upstairs went the twins
4. While a significant number of jaguars survive here,they are only one element of this forest’s food chain. (Line 23-24)
while引导让步状语从句
注意：while引导让步状语从句时，通常放句首，译为“尽管，虽然”。
翻译:尽管相当多的美洲豹在这里生存，但他们仅仅是这个雨林食物链上的一个要素。
while的其他用法：
1）Despite the cold outside, their happy faces fill the air with warmth while merry laughter rings throughout the house. ( 必修二U3课文原句 )
2)He likes football, while I prefer basketball.
此处while引导时间状语从句，译为“与......同时；当......时候”
此处while连接前后两个并列分句，表示对比，译为“然而”
语篇练习：
_____________________________________校园里矗立着一个新的图书馆(完全倒装句) ,and it is ________________________the old one (是旧图书馆的三倍大) . This bright building, ____________(介词+关系代词) thousands of books are stored, has bcome students' favourite place. __________________
(尽管它要求) strict quietness, teenagers still enjoy reading here, surrounded by colorful posters about famous scientists.
In the school stands a new library
three times as large as
in which
While it requires
Draw a simple mind map (思维导图) to reflect on what you've learnt in this class.
Summary:
Homework:
1.Must-do: Finish the exercises on P5.
2. Choose-to-do: Make up a short paragraph using the language points we have learnt today.
Thank you