(共40张PPT)
选择性必修3
Unit 3 Environmental Protection
Words and Expressions
Learning objectives:学习目标1,
1.Learn and grasp the words and expressions in class.
Page 112
2.Learn to use the words and expressions freely.
问题导学3
1.What are the important words and phrases in this unit
Can you list them out
2.Can you finish some exercises with the important exam points
Step3,点拨精讲23
单词预读
1.graph n.图;图表;曲线图(pl.graphs)
diagram'darograem]n.简图;图解;图表;示意图
2.emission n.排放物;散发物;排放(pl.emissions)
continued greenhouse gas emissions持续的温室气体排放
emit [i'mrtv.发出;射出;散发
give off放出;发出(光/热/声音气体等)
give out发出(光/热/声音/气体等)
3.melt-melted-.melted vi.&vt.(使)融化;熔化;软化
a melting pot of different nationalities多民族的大熔炉
melt one's heart使某人的心变软
4.starve vi.&vt.(使)挨饿;饿死
starvation n.饥饿,饿死
starving
adj.饥饿/挨饿的
be starving for sth渴望某事
starve to death饿死
5.seal
n.海豹(pl.seals)印章;保证;密封处/物/垫;封条/蜡
V.封上;密封;覆盖表面;确定;关闭;
seal sth(up/down)封上(信封)seal a contract订立合同
seal sth(up)(with sth)密封(容器)
6.ecology n.生态;生态学/U/
ecologist n.生态学者;
ecologic adj..生态的,生态学的;
4
ecologically adv.从生态学的观点看
7.release vt.&n.排放;释放;发布
release sb/.sth(from sth)释放放出/放走/免除/解除/解雇
to release a movie/book/CD发行电影/书/激光唱片
release the tension in these shoulder muscles放松肩部肌肉
&.methane n.甲烷;沼气/U/produce methane gas产生沼气