必修 第三册Unit 4 Scientists who changed the world Period ⅠWelcome to the unit & Reading重难点 课件(共26张PPT)

(共26张PPT)
Unit 4
Scientists who changed the world
Period Ⅰ
Welcome to the unit & Reading
02
句子控
模块
导航
01
词汇斩
定向练1
用broad或wide的正确形式填空。
1．Travel ________ your mind and leaves you good memories.
2．He lay on the bed, with his eyes ________ open.
3．Although life in a new country can be difficult, it can ________ your horizons.
4．We offer a ________ choice of courses for students.
词汇斩
【解析】1．broadens 　2．wide　3．broaden　4．wide/broad
定向练2
一、在空白处填入1个适当的单词或括号内单词的正确形式。
1．They went into town with the ________ (intend) of visiting the library.
2．We intend ________ (look) at the situation again.
3．The book is intended ________ children aged 5—7.
4．I never intended things ________ (turn) out the way they did.
5．It seemed likely that General Rogers was the killer’s ________ (intend) victim.
词汇斩
【解析】一、1．intention　句意为：他们来到镇上，目的是参观图书馆。
2．looking/to look　句意为：我们打算再次审视局势。intend doing/to do sth 意为“打算做某事”。
3．for　句意为：这本书是专为五至七岁儿童写的。be intended for sb/sth 意为“是为某人/某事物设计的/提供的”。
4．to turn　句意为：我从没想过事情的结果是那样的。 intend sb/sth to do sth 意为“想要某人/某物做某事”。
5．intended　句意为：看来罗杰斯将军可能是杀手袭击的目标。
词汇斩
二、翻译句子。
1．这个职位是为最近获得生物学学位的学生准备的。
________________________________________________________________________
2．我听说他们要结婚了。
________________________________________________________________________
词汇斩
【解析】二、1．The post/position is intended for students who have recently completed a degree in biology.
2．I hear(d) they intend(ed) to marry/intend(ed) marrying.
定向练3
一、在空白处填入括号内单词的正确形式。
1．Complete these exercises without ________ (refer) to a dictionary.
2．The book ________ (refer) to last time has been sold out.
3．There is no direct ________ (refer) to her own childhood in the novel.
词汇斩
【解析】一、1.referring　2.referred　3.reference
二、翻译句子。
1．这个女孩把他称为好朋友。
________________________________________________________________________
2．考试时不准查词典。
________________________________________________________________________
词汇斩
【解析】二、1．The girl refers/referred to him as a good friend.
2．Don’t refer to the dictionary when/while taking/doing/sitting an exam/examination.
定向练4
一、在空白处填入1个适当的单词或括号内单词的正确形式。
1．The limit ________ the foreign factories will be relaxed.
2．The article should be limited________ 100 words.
3．Because of the ________(limit) funds, the company was forced to lay off many workers.
4．In order to save time, he limited his lecture ________ thirty minutes.
5．The organizer has set strict limits ________ the entries of the competition.
词汇斩
【解析】一、1．on　句意为：对外国工厂的限制会放宽。
2．to　句意为：这篇文章应该限制在100字以内。表示“把……限制在……范围内”用limit… to…。
3．limited　句意为：由于资金有限，公司被迫解雇了很多工人。设空处修饰名词funds，应用形容词形式，此处意为“有限的”。　
4．to　句意为：为了节省时间，他把他的演讲限制在30分钟以内。
5．on　句意为：举办方对参赛作品作出了严格的限制。set limits on为固定搭配，意为“对……作出限制”。
二、翻译句子。
1．In my opinion, keeping dogs should not be banned, but limited to certain areas.　　
________________________________________________________________________
2．We have a heated discussion on the most efficient way to finish the plan in limited time.
________________________________________________________________________
词汇斩
【解析】二、1．在我看来，养狗不应该被禁止，但是应该限制在特定的区域内。
2．我们就如何在有限的时间内完成计划的最有效的方式展开了激烈的讨论。
定向练5
在空白处填入1个适当的单词或括号内单词的正确形式。
1．Rushed to the nearest hospital, the injured boy was treated ________ delay and has been out of danger.
2．This afternoon he called to put ________ the meeting to next week.
3．After a long discussion, they decided to delay ________ (carry) out the plan.
4．He decided to postpone ________ (buy) the house because his mother was ill, which cost him a lot of money.
词汇斩
【解析】1．without　句意为：这名受伤的男孩被迅速送往最近的医院接受治疗，目前已脱离危险。
2．off　句意为：今天下午他打电话说把会议推迟到下周。
3．carrying　句意为：经过长时间的讨论，他们决定推迟该计划的实施。
4．buying　句意为：他决定推迟买那栋房子，因为他的母亲病了，这花了他很多钱。
定向练6
在空白处填入1个适当的单词。
1．We have already taken action to speed ________ a solution to the problem.
2．The car went ________ a speed of 100 kilometres an hour.
3．I realize that I shall be late unless I speed ________.
词汇斩
【解析】1．up　句意为：我们已经采取行动加快解决这个问题。
2．at　句意为：那辆车以每小时100千米的速度行驶。
3．up　句意为：我意识到如果我不加速，我将会迟到。
定向练7
一、在空白处填入1个适当的单词或括号内单词的正确形式。
1．Your efforts to develop good habits will pay ________ later.
2．It’s our managing rule that ________ (pay) shall be made in cash.
3．During the next ten years, she had to work hard to pay ________ the house.
4．It gives me the chance to pay ________ the help that people gave me when I was in trouble.
5．Cleaning workers in big cities usually get ________ (pay) by the hour.
6．Afterwards, I paid ________ my groceries and left the store.
二、翻译句子。
He was determined to become a doctor and his persistence paid off.
________________________________________________________________________
词汇斩
【解析】一、1.off　2.payment　3.for　4.back　5.paid　6.for
二、他决心成为一名医生，他的坚持取得了成功。
定向练8
在空白处填入1个适当的单词或括号内单词的正确形式。
1．Who exactly stands to benefit ________ these changes
2．Don’t go to any trouble ________ my benefit!
3．Steve didn’t have the benefit ________ a formal college education.
4．You need people working ________ the benefit of the community.
5．I hope what I have written will be ________ benefit to someone else who may feel the same way.
6．Using computers has a ________ (benefit) effect on children’s learning.
7．I hope your holiday will be beneficial ________ you.
词汇斩
词汇斩
【解析】1．from/by　句意为：到底是谁可能会从这些变化中获益？
2．for　句意为：别为我浪费工夫！
3．of　句意为：史蒂夫没有受过正规的大学教育的优势。
4．for　句意为：你们需要为社区利益服务的人。
5．of　句意为：我希望我所写的内容能对其他可能和我有同感的人有所裨益。
6．beneficial　句意为：使用计算机对孩子们的学习产生有益的影响。
7．to　句意为：我希望你的假期对你有益。
定向练9
根据汉语意思完成句子。
1．他引领观众到他们的座位上。
He________ the members of the audience to their seats.
2．获知他被选中指挥一场音乐会，他感到非常紧张。
Hearing he was chosen to ________ ________ ________, he felt very nervous.
3．为了知道电脑为什么如此重要，我决定做个实验。
To find out why computers are so important, I’ve decided to ________ ________ ________.
【解析】1．conducted/conducts 2．conduct a concert
3．conduct an experiment
词汇斩
句子控
定向练1
在空白处填入括号内单词的正确形式。
1．A humanoid robot named Sophia has made history by becoming the first robot in the world ________ (award) citizenship.
2．The best means ________ (solve) it is to be united.
3．He would be the last ________ (agree) to the plan.
4．Sharing is the best way ________ (make) friends.
【解析】1.to be awarded　2.to solve　3.to agree　4.to make
句子控
定向练2
根据汉语意思完成句子。
他是喜欢打篮球的男孩之一。
He is ________ ________ ________ ________ who enjoy playing basketball.
【解析】one of the boys
句子控
定向练3
用定语从句改写句子。
1．A huge crack cut across the houses, roads and canals.
The crack was eight kilometres long and thirty metres wide.
________________________________________________________________________
________________________________________________________________________
2．Later that afternoon, another big quake shook Tangshan.
It was almost as strong as the first one.
________________________________________________________________________
________________________________________________________________________
句子控
【解析】1．A huge crack that/which was eight kilometres long and thirty metres wide cut across the houses, roads and canals.
2．Later that afternoon, another big quake that/which was almost as strong as the first one shook Tangshan.
句子控
定向练4
根据汉语提示补全句子。
1．All the gifts must be mailed immediately ____________________ (为了能在圣诞节前收到)．
2．____________________ (为了完成这个任务)，we’ll have to work day and night.
3．They study more and practise more ____________________ (为了取得巨大的进步)．
【解析】1．in order to/so as to/to be received before Christmas＝in order that/so that they can be received before Christmas　
2．In order to finish the task/To finish the task/In order that we can finish the task
3．in order to/so as to/to make great progress＝in order that/so that they can make great progress
句子控
定向练5
一、翻译句子。
1．In order to ensure success we must have a complete and thorough plan.
________________________________________________________________________
________________________________________________________________________
2．We work hard at English so as to have a good command of it.
________________________________________________________________________
________________________________________________________________________
【解析】一、1．为了确保成功，我们必须要有一个完整且详尽的计划。
2．为了掌握好英语，我们下苦功夫学习它。
句子控
二、在空白处填入括号内单词的正确形式。
1．________ (complete) the job on time, he decided to turn to his best friend for help.
2．We don’t have to sacrifice the environment ________ (promote) economic growth.
【解析】二、1．To complete　句意为：为了按时完成这项工作，他决定向他最好的朋友求助。
2．to promote　句意为：我们不必为了促进经济增长而牺牲环境。
句子控
定向练6
在空白处填入1个适当的单词。
1．________ was not until she took off her dark glasses that I recognized her.
2．It was not until his son came back ________ he went to bed.
3．It was not until midnight ________ they reached the camp.
【解析】1．It　2．that　3．that