北师大版（2019）选择性必修第一册Unit 3 Conservation Lesson 1 The Sixth Extinction 单词课件(共12张PPT)

(共12张PPT)
Unit 3 Lesson1
单词
die out 消失；绝迹，灭绝
species [ spi i z] n.物种，种
wipe* [wa p] vt.擦；拭
wipe out 彻底毁灭
unusual [ n ju u l] adj.异常的；不平常的
mass [m s] adj.大量的
varied [ ve rid] adj.各种各样的，形形色色的
asteroid* [ st r d] n.小行星
decrease [d kri s] vi.&vt.减少 n.减少；减少的量
blame [ble m] vt.责怪，指责
be to blame 把…归咎于
affect [ fekt] vt.影响
导
be at risk 处境危险，受到威胁
endangered [ n de nd d] adj.濒危的
solar [ s l ] adj.太阳光(能)的
hatch [h t ] vi.&vt.(使)孵化
restore [r st ] vt.(使)恢复
导
die out 消失，灭绝
die of/from 死于……
die off 相继死去
die-died(过去式）-died（过去分词）-dying(现在分词）
In recent years, some birds have _____________environmental
pollution. With more and more birds_____________, some day some species will_________ (用die的相关短语填空。)
died of/from
dying off
die out
2. unusual adj.异常的 unusually adv.异常地
usual adj.通常的 usually adv.通常地
It is_________ for students to take part-time jobs during summer vacation.
__________(usual), the work is boring.
usual
Usually
mass extinction 大灭绝
massive adj.巨大的
(1)It’s time to have lunch, so there surely are_________(mass) of people in the dining room.
(2)With forests destroyed, masses of soil _____(be) being washed away each year.
masses
is
n. 大量
a mass of / masses of 大量 +U/C
adj. 大批的，数量极多的
3. mass
4.varied adj. 各种各样的，形形色色的
vary v. 使…变化,改变
variety n. 变化，种类
various adj.各种各样的
a variety of 各种各样的
5. decrease n. 减少；减少的量 v.减少
decrease by /to 减少了/到
increase n. 增加 vi & vt 增加
The number of the students in our school has decrease to 1200.
翻译：我们学校的学生数量已减少到1200人
(2)The number of the students in our school has decrease 20%.
by
6.blame vt 责怪，指责 be to blame 把……归咎于;受到责备
blame sb for sth
blame sth on sb
The teacher didn’t know who was___________(blame)
Don’t blame him_______ breaking that vase; after all, he is only a child.
to blame
for
因某事责备某人
7.affect vt.影响 effect n.影响
impact influence n. 影响
have an effect/impact/influence on 对…有影响
effective adj. 有效的
8. 处境危险 be at risk
冒险做某事 risk doing sth
We must use clone cautiously, because it may put people ____ risk.
at
9. endangered adj.濒危的
danger n.危险 endanger vt.使处于险境
dangerous adj. 危险的
in danger 使……处于危险之中
这些濒危的物种处于危险之中。
These endangered species are in danger.
1. The old bridge was totally ______________(毁掉)
in the heavy rain last week.
2. A lot of things, such as iron, glass and paper, can be ______________(回收).
3. Wildlife is not allowed to be ________(猎杀) in this mountain areas.
destroyed
检
recycled
hunted