Unit 3 Conservation Topic Talk 单词 课件 (共10张PPT)北师大版（2019）选择性必修第一册

(共10张PPT)
Unit3 Topic Talk
词汇课
destroy
vt. 破坏；摧毁；
destroy one's confidence/hope 摧毁某人的信心/希望
→ destructive adj. 破坏性的；引起破坏的
→ destruction n．破坏，毁灭
Those rich countries have caused half of the world’s environmental
___________(destroy) while paying only 3% of its costs.
e.g. There are several ways we destroy nature.
destruction
/d str /
item
n. 一件商品；一则或一条
an item of 一项；一条；一则
单句写作：报纸上有一条关于他的新闻.
e.g. We all need to reuse previously used items in order to protect our environment.
an item of news about him on the newspaper
There is _________________________________________ .
/ a t m/
recycle
vi. & vt.再利用，回收利用
We package our products in ___________ (recycle) materials.
e.g. We should recycle and reduce the amount of waste we produce.
→ recyclable adj.可回收利用的　
→ unrecyclable adj.不可回收的
recyclable
/ ri sa kl/
threat
/θret/
n．威胁；(灾难等坏事)发生的可能
under threat 遭受威胁
a threat to 对……的威胁
→ threaten vt. 威胁；恐吓；危及，威胁到；
→ threatening adj. 恐吓的，威胁的
He is unlikely to be ___________ the Spanish player in the field.
e.g. The use of oil and coal is one of the biggest threats to our planet.
a threat to
相信他不会在决赛中对这位西班牙运动员构成威胁.
switch
/sw t /
vi. & vt.转换，改变　
n. [C](电路的)开关；转换器；改变)
完成句子：She ____________ (打开) the bedside lamp and began to read a novel.
switched on
switch on＝turn on 打开，接通
switch off＝turn off 关上，把……关掉
switch over 转换频道，转变
We definitely need to switch to different forms of power as soon as possible.
illegally
/ li ɡ li/
adv.非法地，违法地
→ illegal adj.非法的
→ legal adj.合法的
It’ s _______ (legal) to read people’s private letters without permission.
e.g. Many animals are illegally hunted for something they have.
illegal
hunt
/h nt/
vi. & vt.猎取，猎杀　vi.搜寻　n．狩猎；搜寻
Weather permitting, we'll go __________this Sunday morning.
e.g. The whole neighbourhood have been hunting for the missing child.
hunting
go hunting 去打猎
hunt for 搜寻，寻找
→ hunter n．猎人；搜集某种东西的人
extinct
/ k st kt/
adj.灭绝的，绝种的；消亡的；不再活跃的；死的
→extinction n．灭绝；消亡
Many species of plants and animals are in danger of ___________.
e.g. How long do we have before rhinos become extinct？
be close to extinction 濒临灭绝
extinction
urgent
/ d nt/
adj.紧急的，急迫的
→urge v．催促，力劝；竭力主张　
n．冲动
They’ve called on an __________(urge) meeting for this meeting.
e.g. That's an incredibly urgent matter.
It is urgent that + 从句【主语＋(should＋)动原＋其他】 极力主张
urgent