Unit 5 Into the unknown Developing ideas 课件(共19张PPT)-2025-2026学年外研版（2019）选择性必修第四册

(共19张PPT)
Unit 5 Into the unknown
Developing ideas & Presenting ideas vocabulary and phrases
课前基础自测
一，单词
(1) n.珊瑚 (2) n.毫米
(3) adv.向上,朝上 (4) adj.等同的,等值(5) v.整齐地堆起 (6) adv.此外,而且
(7) adj.值得主意的 (8) n.物质
(9) n.钻探,勘探 (10) n.(书的)卷,册
coral
millimeter
upward
equivalent
stack
furthermore
notable
substance
drilling
vol=volume
一，单词
(11) n.shipwreck
(12) adj.archaeological
(13) n.barreleye
(14) n.trench
(15) n.vessel
失事的船;沉船
考古学的,考古的
管眼鱼
海沟
课前基础自测
船，舰
二，短语
(1)就像...一样;正如 .
(2)起航(去某地)
(3)继续做某事 .
(4)此外 .
(5)等同于,相当于 .
(6)保持...的记录 .
(7)开发,开垦 .
(8)为...所熟悉 .
(9)有人主张... .
(10)更有可能 .
as with...
set sail (for sp.)
continue to do sth.
in addition
be equivalent to
hold the record for...
open up
be familiar to...
it's argued that...
it's more likely that...
课前基础自测
三，词汇拓展
1. v. 限制; 限定→ 　　 adj.有限的→ n.限制;控制;局限
2. v.开始→ n.开端;开始部分
3. n.火山→ adj.火山的,火山引起的
4. n.价值;用途 v. 重视→ adj.有价值的
5. v. 想象; 设想→ n.想象力;想象
→ adj.富有想象力的→ adj.虚构的
limit
limited
limitation
begin
beginning
volcano
volcanic
value
valuable
imagine
imagination
imaginative
课前基础自测
imaginary
三，词汇拓展
6. n.深,深度→ adj.深的
→ adv. 深深地;非常
7. n.海洋→ adj.海洋的;生活在海洋里
8. adj.显要的值得注意→ adv.著名地
9. adj.等同;相当的→ n.相等;对等;相当
10. n.经济→ 　　 adj. 经济的
→ adj.经济的;节约的
depth
deep
deeply
ocean
oceanic
notable
notably
equivalent
equivalence
economy
economic
economical
课前基础自测
Language points
1. limit
v. 限定;限定
n. 限制;界限; 界线;范围
limited adj.有限的
be limited to sth./sb. 局限于某物/某人
there is no limit to sth. 某事没有限制
within the limits of... 在...的范围内
Exercise
1. We only have a (limit) amount of time.
2. There is no limit how much fruit you can eat.
3. She has to work within the (limit) of a fairly tight budget.
4. The protests were not limited New York.
limited
to
limits
to
Language points
2. reach
n. 范围;臂展;河段;边缘地带
reach v. 到达=get to = arrive at/in;
伸手;够得着;增加到;提升到;达到; 实现
beyond the reach of... 超出...的能力范围;够不到的地方
out of reach 够不着
reach out to 把手伸向...,接触...,向...寻求帮助
within reach of sth.=near to 在...附近;靠近...
Exercise
1. I need to live reach of a hospital.
2. Keep medicines of reach of children.
3. Her death could have been prevented if there had been someone to reach out her.
4. The little girl reached and took her hand.
5. Most children stay at home they reach school age.
within
out
to
out
until
Language points
3. record
n. 记录; 记载;
v. 记录, 记载; 录制;录音;录像
hold a record (for) 保持(...)记录;持有(...)记录
set a new record/break the record 创下新纪录/打破纪录
on record 记录在案的; 公开发表的
it's recorded that... 据记载...
Exercise
1. As a student, he broke the Scottish record the 100 metres.
2. The deadliest blizzard record is the 1972 blizzard in Iran.
3. Her childhood (record) in the diaries of those years.
.
for
on
is recorded
Language points
4. explore
v. 勘探；仔细检查；研究；探究
exploration n. 考察；探测
explorer n. 探险者；考察者
explore for 探寻某物
go exploring 去探险
Exercise
1. The scientists (explore) ways to deal with the termites(白蚁) now.
2. I’m going to explore possibility if a part-time job.
3. The mile-deep well was originally dug to explore oil.
are exploring
the
for
Language points
5. advanced
adj. 高级的;先进的
advance v. 前进;促进;提前 n. 前进;进步
advance on/upon/towards 向...推进/挺进
advanced technology 先进的技术
in advance 预先；提前=ahead of time
make advances in... 在......取得进步/进展
Exercise
1. We must reserve the plane tickets advance for the peak tourist season.
2. It’s not all that hard to build an (advance) and large vocabulary.
3. Advances medical science mean that people who would die of head injuries can now be saved.
in
advanced
in
Language points
6. lack
v. 有；缺乏 n. 缺乏；短缺
lacking adj. 缺乏；不足
a lack of 缺乏......
lack confidence/imagination 缺乏信心/想象力
be lacking in 缺乏......
for/through lack of 因缺乏......
Exercise
1. Some students lack confidence themselves.
2. She felt nervous, increasingly (lack) in confidence about herself.
3. The charges were dropped lack of evidence.
4. The immediate problem is lack of food and water.
in
lacking
for
a
Thank you for watching