课件27张PPT。Unit 3
Science and nature Word powerPrefixes and suffixesAnswer some questions with the proper forms of each given word.able agree lead novel responsible respectYou can not find your new pen. What happened to it?
You want to get the book on the top shelf, but you are not tall enough. Do you think you will be able to reach it?It disappeared.I am unable to do so.3. The two groups at the meeting didn’t agree with each other. They argued fiercely. What is the problem between them called?
4. Many people respect Mr Li and think he is a good man. He helps people out and is a good citizen and friend. Can you think of word to describe Mr Li?Disagreement.Respectable.5. Miss Wang has punished several books. She loves her job – writing novels. What is Miss Wang’s occupation?
6. If someone lacks a sense of responsibility, what word can we use to describe him?
7. Some advertisements say that if you take their pills, you will be healthy, look younger. What can you say about this kind of advertisement?She is a novelist.Irresponsible.It is misleading.unabledisagreementmisleadingnovelistirresponsibleable
agree
lead
novel
responsible
respectrespectableindependenceindependenceprefix(前缀)stem (词干)suffix(后缀)Prefix: a group of letters that is added to the beginning of a word to change its meaning.Suffix: a letter or a group of letters added to the end of a word to make a different word.有时候一个英语单词可以分为三个部分:前缀(prefix)、词干(stem)及后缀(suffix)。单词中位于词根前面的部分就是前缀,如:un-, dis-, mis-, ir-等。位于词干后面的部分就是后缀,如:-ment, -ing, -list, -able等。
一般而言,前缀只改变词义,不改变词类;后缀主要改变词类,而不改变词义。More examples:
intrapersonal minibus microware
nonsmoker postwar outdoor
underground enlarge extrasolar
personal importance employee
shorten singer survivor hostess
fearful tourism protective modernize
dreamlike dangerous Hangzhou is so beautiful that many _______ go there every day. (foreign)
They had a hot ________ on eating habits at yesterday's class meeting. (discuss)
He looks much ________ than he used to be. (health)
I’m __________ sorry for what I did. (true)
The ______ man from the right in the picture works in a hospital. (twelve)foreignersdiscussionhealthiertruthfullytwelfth用所给单词的正确形式填空。6. You are very careless and I'm afraid your answer is _________. (correct)
7. Some famous _______ will come to the International Art Festival in Shanghai. (paint)
8. Some children are flying kites________ in the Century Park. (happy)
9. It's hot today, but the weather report says it will be ________ tomorrow. (cloud)
10. Don’t ________ the river. It’s the lifeline for the townspeople. (pollution) incorrectpainterhappilycloudypollute【练一练】根据句意及构词法用所给单词的适当形式完成句子。 You must __________ (apology) to Jane for having been so rude to her at the ball.
2. Being too tight , the shoes are very _____________. (comfortable)apologizeuncomfortable3. To his great _______________ (disappoint), his plan was turned down at the meeting.
4. Being a _______ (self) man, he is always thinking about himself.disappointmentselfish5. It was _________ (care) driving that resulted in this serious traffic accident.
6. Everyone here ________ (like) him, for he is always telling lies.carelessdislikes7. He __________ (threat) to kill me if I didn’t give him my handbag.
8. The lift broke down and we had to walk to our office on the _______ (five) floor.threatenedfifthThe following sentences are from the text. Read them again and point out the prefix or suffix of each underlined word. 1. They use their huge teeth and work hard to cut down trees, remove branches and put them across streams.
2. Historians say the beaver had an important in the settlement of North America.Prefix: re-Suffix: -ment3. In fact, for two hundred years or more, beavers provided the most valuable fur in North America.
4. In their search, they explored much of the western territories.Suffix:-ableSuffix:-ern5. The bag is one of the simplest and most useful things in every msn or woman’s life.
6. The tradesman’s secret was out: he was tricky , and now everybody knew it. Suffix: -fulSuffix: -yFinish the exercise on Page 46.Answers
(1) irresponsible (2) disrespect
(3) harmful (4) uncertain
(5) illegalOrgans of the bodyAn organ is a part of the body that has a special job to do.
Can you name the major organs of the body? hairfootankleearforeheadeyebroweyenecknose mouthhandarmlegfingerwristtoekneeshouldereyelidFinish the exercise on Page 47. Answers
(1) brain (2) heart
(3) liver (4) lungs
(5) stomach (6) kidneysthe human body
brain
heart
liver
lungs
stomach
kidneysthe school
the headmaster
the teacher
knowledge from teachers
the life at school
learning process
the cleaners, repairmen and security guards in the school