资源简介

(共15张PPT)
Unit 5 Working the Land
Language Points
01
chemistry n. 化学；化学过程
chemical n. 化学制品，化学药品
复数 chemicals
adj. 化学的
The whole food chain has been affected by the overuse of
__________ in agriculture. (chemistry, chemicals)
2. Organic _________ is considered to have originated in the
early 19th century.(chemistry, chemicals)
chemicals
chemicals
02
However, what she is unhappy about is the lower nutritional value and reduced flavour.
flavour n. 味道；风味；特点
v. 给......调味
bitter flavour/delicate flavour
six different flavors of ice-cream
eg. The stories have a strong regional flavour.
As for chemical fertilizers, crops grown with them usually grow too fast to be rich in nutrition.
nutrition（u) n. 养料的供给；养料的摄取；营养学；食物；营养物
poor nutrition 营养不良
eg. A balanced diet provides nutrition for your body.
03
●Despite numerous claims that meal-replacement products provide sufficient nutrition and calories, using them over a long period, instead of eating three regular meals a day, could pose health risks, according to experts.
●Yang Yuxiang, a senior nutritionist, said choosing healthy meal-replacement products could be an acceptable substitute for people who want to control their weight.
●Meal replacement need to have enough healthy nutrients as well as vitamins and minerals.
●Experts call for “healthier, safer, and more nutritious diets ”.
adj. 营养丰富的
（n./adj) 营养素，营养物
nutritional adj. 营养的
04
This affects the crops grown on the land and, in turn, the animals and humans who digest them.
eg. All this has upset me. I need time to digest it all.
05
They may look beautiful on the outside, but inside there is usually more water than essential minerals.
essential adj. 比不可少的， 最重要的
essentially adv. 本质上， 根本上（同basically)
(1) be essential to sth.
(2) be essential for sb. to do sth.
(3) It is essential that... (should) do sth.
(4) It is essential for sb. to do sth.
eg. Sun and water is/are essential to the growth of crops.
eg. The words are essential for everybody to learn English.
eg. It is essential that you get a visa before you travel abroad.
eg. It is essential for high-new technology enterprises to strengthen competitive power.
06
As an alternative, some farmers have switched to organic farming, ...
alter v. （使）改变，（使） 变化
alternative adj. (只用于名词前）可供替代的，可供选择的
非传统的，另类的
n. (C) 选择， 供选择的东西
alternatively adv. 二者选其一地；或者
eg. The way was blocked, so we went by an alternative road.
an alternative lifestyle
eg. I had no alternative but to report him to the police.
eg. I could come to your house, or alternatively we could meet in town.
07
... but many other vegetables put down deep roots.
root
n.（C) 根， 根源， 起源，词根
eg. After 20 years in America, he still feels his roots are in China.
the root of sth. ... ...之源
has one's roots in ... ... ...起源于... ...
take root in one's mind 在某人的头脑里生根
v. (使）生根，（使）扎根
root your cuttings
eg. Your cuttings has rooted.
be rooted in 扎根于... ... /根源在于... ...
root out/up 连根拔起
eg. She found herself rooted to the spot in disbelief.
rooted adj. 一动不动的，生了根似的
08
What other important aspects of agriculture do you want to know about
aspect
(C) 方面
in this/ that aspect
in every aspect/from every aspect
eg. Technological change is everywhere and affects every aspect of life.
（U）外观，样子
Our school takes on an entirely new aspect.
词块积累
1. for instance
2. in turn
3. at a depth of
4. a diverse range of crops
5. high cost of producing food
6. great effort required to farm
7. keep people and the environment as healthy as possible
例如，比如
相应的，轮流
深达... ...
各种各样的农作物
生产粮食的高成本
耕种所需的巨大努力
尽可能保持环境和人的健康
8. find a suitable solution
9. nowhere near
10. damage to the environment
11. switch to
12. a great way to increase production
13. in widespread use
14. organic farming
找到适合的办法
远非，绝不是
对环境造成的伤害
转向
增加产量的好方法
广泛的使用
有机农业
看
观
谢
谢

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