资源简介

(共26张PPT)
外研版高中英语 选择性必修第四册
Unit 5 Into the unknown
Mainly revision for this unit
本课件主要内容安排
课件内容
1. 单元构词扩展词汇
2. 单元核心词汇讲解
3. 单元专题语法讲解
4. 单元重点句型讲解
单元构词扩展词汇
1 tropical adj.→ n. ________________
7 civilization n.→v. ___________________
2 expansion n. →v.________________
8 abandon v. →adj. ________________
3 investigation n. →v. ________________
9 exploration n.→v. _______________
4 archaeological adj.→n. _______________
10 creature n. →v. ______________
5 notable adj.→ adv. _______________
11 equivent adj.→adv. _______________
6 drilling n. →v. ____________
12 eruption n. →v. ____________
tropic
expand
investigate
archaeology
notably
drill
civilize
abandoned
explore
create
equivently
erupt
单元重点短语
1 fall into ruins
8 throw oneself into
2 make a getaway
9 think twice
3 run for one’s life
10 look into
4 check out
11 shrink from
5 test the waters
12 be equivalent to...
6 steer clear of...
13 set sail
7 set out
14 hold the record for...
词汇一 dismiss v. 拒绝考虑，否定，开除
◆ 教材原句 Although his theory has been dismissed by scholers, it shows how powerful of Ancient civilization are. 尽管他的理论已经被斯科尔斯所否定，但它表明了古代文明是多么强大。
◆ 要点必记
dismiss ... as... 因认为...而不予考虑
dismiss sth from sth 不再考虑，消除，摒弃
dismiss sb from (one’s post) 解雇，免职，开除
dismiss sb for sth 因为某事解雇某人
跟踪练习
1. The man in black laughed and dismissed my proposal __________ unrealistic.
2. The senior student tried his best dismiss the disturbing problem __________ his mind as soon as possible.
3. The female employee claimed she ___________________ (dismiss) her post in an unfair way.
4. After _____________(dismiss) her fears, she bravely climbed higher.
5. Now it’s 5:00 pm. It’s high time that all the pupils __________________ (dismiss).
as
from
was dismissed
dismissing
should be dismissd
词汇二 abandon v. 遗弃，中止，逃离
◆ 教材原句 But the greatest mystery of all is what caused the Maya to abandon most of their great cities.
◆ 要点必记
abandoned adj. 被遗弃的，被抛弃的
abandon oneself to... 沉湎于...
abandon sb to sb/sth 把...丢弃给...
an abandoned house 废弃的房子
跟踪练习
1. The study showed a deep fear among the elderly of being abandoned _______ the care of strangers.
2. They abandon themselves to ____________ (drink) alcohol.
3. The child was found _______________ (abandon) but unharmed.
4. They were sinking fast, and the captian gave the order _____________ (abandon) the ship at once.
5. The project had to __________________ (abandon) due to a lack of government funding.
to
drinking
abandoned
to abandon
be abandoned
词汇三 expansion n. 扩大，增加
◆ 教材原句 with huge expansion of the population 随着人口的急剧增长。
◆ 要点必记
expand v. 扩大，增加；详述
expand into... 将...扩充成...
expand to ... 扩充到...
expand on... 详述
an expansion of.... (...)的扩展部分
跟踪练习
1. The company is forging ahead with its plans for ____________ (expand).
2. At present, there are no plans _____________ (expand) the local airport.
3. The president used today's speech to expand _________ remarks he made last month.
4. Transport networks need ________________ (expand) to remote rural areas.
5. The director plans to expand the firm _________ an international company.
expansion
to expand
on
to be expanded
into
词汇四 retreat v. 后退，离开，退避
◆ 教材原句 Instead of retreating to their caves, some of our ancestors chose to subdue their fears and pursue the unknown. 我们的一些祖先没有退缩到洞穴里，而是选择了征服恐惧，追求未知。
◆ 要点必记
retreat n. 隐居处，修养处
retreat from... 避开， 放弃
retreat to... 撤退到...
retreated back down... 从...撤回
跟踪练习
1. The new driver could not retreat ________ his responsibility in this accident.
2. They say they will stay to rebuild their homes rather than retreat ______ refugee camps.
3. The area is rural with a long history as _______ retreat for city dwellers(居民).
4. The president's remarks appear to signal that there will be no retreat from his position. (英译汉)
______________________________________
总统的话似乎暗示他不会放弃自己的职位。
a
to
from
词汇五 investigation n. 调查，调查研究
◆ 教材原句 Talk about the investigations into another scientific mystery. 谈谈对另一个科学谜团的调查研究。
◆ 要点必记
investigate v. 调查，研究
investigate into sth 对...进行调查
under investigation 在调查研究中
make an investigation
跟踪练习
1. The _______________(investigate) was carried out under the direction of a senior police officer.
2. I hope you can make an investigation________this matter as soon as possible.
3. More serious leaks, involving national security, are likely to _________________ (investigate) by the police.
4. Up to date, all the patients __________ investigation have received treatment with this drug.
investigation
into
be investiaged
under
词汇六 equivalent adj. 等同的，等值的
◆教材原句 The pressure is equivalent to 50 aeroplanes stacked one on top of another. 其压力相当于50架飞机叠在一起。
◆要点必记
equivalently adv. 等价地，同等地
be equivalent to.... 同等于，相当于
be equivalent to doing sth 同等于，相当于
equivalent length/ depth/ 同等长度，同等深度
跟踪练习
1. Changing her job like that is equivalent to __________ (give) her a good chance.
2. These are not similar or equivalent __________ what happens when man ages.
3. Please use this way if you really want to deal with such exception types ______________ (equivalent).
4. The helmets are designed to withstand impacts equivalent to a fall from a bicycle. (英译汉)
____________________________________________
头盔设计成能承受相当于从自行车上摔下来的力度。
equivalently
to
giving
单元语法 复习名词性从句
1 subject clause It serves as the subject of the sentence.
2 object clause It serves as the object of the sentence.
3 predictive clause It serves as the predictive of the sentence.
4 appositive clause The clause gives further information about the noun before the clause.
一. 名词性从句的类型以及语用功能
二.名词性从句的引导词
1. 连词that：本身无意义。引导单一的宾语从句时that常可省略，但引导主语从句、表语从句、同位语从句时that通常不被省略。
2. whether,if ：本身有意义"是否"，表从句内容不确定性；as if =as though：表示"好像/似乎"，以上在从句中均不充当任何成分。
3. 连接代词10个: what/whatever, who/whoever, whom/whomever, whose/whosever, which/whichever;
4. 连接副词8个:when/whenever, where/wherever, how/however, why,because.
理解应用
1.___________ the college will take in more new students this year is true.
2. We took it for granted __________ they would accept the proposal.
3. The doubt is __________ she should have a low opinion of the test.
4. I am going to express ___________ comes into my mind.
5. To practice as much as possible is ____________ the secret lies.
6. In such a case, I will insist on ___________ I bebieve is ture.
7. ____________ breaks the rules will be punished for sure.
That
that
whether
whatever
where
whatever
Whoever
单元重点句型 1
1. This is likely to have led to a series of drought, each lasting for a couple of years.
[句式分析] “each lasting for a couple of years”是由“代词+ 现在分词”构成的 独立主格 结构。 其中动词last 与逻辑主语each 构成 主动 语态关系，故使用 现在 分词。
[尝试翻译] 这可能导致了一系列的旱灾，每一次旱灾持续几年时间。
理解应用
1. So many students _________ (be) absent, the meeting had to be put off.
2. The boy lay on his back, his hands ____________ (cross) under his head.
3. These are the first two books， the third one _______________ (come) out next month.
4. Her shirt ___________ (catch) on a nail, she could not move.
5. The man in trouble lay there, his hands _____________ (tremble).
6. He suggested going for a picnic, Mary ____________(provide) the food.
being
crossed
to come
caught
trembling
to provide
单元重点句型 2
2. Meanwhile, the rise and fall of this civilization must also leaves us thinking about our own past, present and future.
[句式分析] “leave + 宾语+ 宾语补足语”表示“ 使......处于某种状态 ”，宾语补足语可以是现在分词、过去分词、不定式、形容词、名词或小品词（on/off; up/ down; away/ in/out）。
[尝试翻译]与此同时，这种文明的兴衰也必然让我们思考自己的过去、现在以及未来。
理解应用
1. The young fellow left business _________ a new job as a schoolteacher.
2. The boy got up and walked away, leaving his father __________ (sit) on their comfortable sofa, totally speechless.
3. The fact is that a balanced diet can keep us ____________ (energy).
4. We must leave the children ___________ (settle) their affairs themselves.
5. Did you leave the doors and windows _____________ (fasten)
for
sitting
energetic
to settle
fastened
单元重点句型 3
3. Among these is Esmeralda, the earliest wreck from the age of the European exploration of Asia.
[句式分析] 本句使用了 全倒装 句式。Esmeralda为主句，the earliest wreck from the age of the European exploration of Asia作主语的 同位语 。
[尝试翻译] 埃斯梅拉达号就在其中，它是欧洲探索亚洲时期最早的沉船。
理解应用
1. Down came the rain and up __________ (go) the umbrellas.
2. To be carefully considered right now _______ (be) the following questions.
3. By the window _________ (sit) a young man with a magazine in his hand.
4. ___________ (stand) beside the table was his wife.
5. ___________ (bury) in the sands was an ancient village.
6. It’s 11:45 am now. Listen! There _________ (go) the bell.
went
are
sat
Standing
Buried
goes
感谢您的观看

展开更多......

收起↑