高二英语unit11教案4Word文档下载推荐.docx

1、1.a projector 2. a computer预 习 要 求Recite the new words教 师 活 动 内 容、方 式学 生 活 动 内 容、方 式旁 注Step I Lead inT: Good morning afternoon, class!Ss: Good morning afternoon ,M r/Ms In this class, we are going to start Unit 11 Scientific achievements .Now pay attention to the two words. Will you please tell me h

2、ow the two words are formed? Observe them carefully; can you explain how they are formed? Excellent ! That is how the two words are formed. The basic part of any word is the root; to it, you can add a prefix at the beginning and/or a suffix at the end to change the meaning. For example, in the word

3、unflattering, the root is simply flatter, while the prefix un- makes the word negative, and the suffix -ing changes it from a verb into an adjective （specifically, a participle）.This is the grammar we are going to learn in this class.（Show Word Formation on the powerpoint.）Step II GrammarAsk student

4、s to observe the given words carefully and find out how words are formed. How do learners improve their vocabulary? There are no super shortcuts to vocabulary, but there are various forms of support. Here is one example. Increasing your vocabulary is so important that you just cant forget about it.

5、Dont bury your head in the sand. OK. Please look at the following words and tell how they are formed. （Show the following words on the PowerPoint.） affix infix prefix suffix Teacher explains the following. What do these words （nouns） have in common? All of them contain the root “fix”. Well, they do

6、have a number of things in common. Lets settle for the most obvious, the fix at the end. So if we split them, this is what we get af + fix in + fix pre + fix suf + fix （These will be shown on the PowerPoint）S1“Scientific”is the adjective form of” Science”.S2:“Achievement “ is the noun form of “achie

7、ve”.S3:” Science” is a noun, if we add fic to it, then we get its adjective.S4: “achieve” is a verb. If we add ment to it, we get its noun.Here are some of the most common Latin prefixes （for the meanings of the Latin roots, look up the words in a good dictionary）: （Show the following on the PowerPo

8、int.）ab （away） abstain, absent, absolve ad （to） adverb, advertisement, advance, adjoin in /il-/im-/ir-（not） incapable, indecisive, intolerable , illegal, impossible, irrugularinter （between, among） international, interaction interdependent, interprovincial pre （before） prerecorded, preface prefer po

9、st （after） postpone, postscript, postwar sub （under, not quite） subsoil, subscription, suspect ,subway, subnormaltrans （across, to a changed state） transfer, transit, translate, transport ,transform What does mean? Fix means attach to, fasten, stick, glue. What about af , inpresuf ? in and are under

10、standable, arent they ? a room, a sentence, a word. means before like in pre-war, pre-school, premature. So what do infix and prefix actually mean? infix - to attach something inside （a word）.prefix - to attach something at the beginning of （a word）What about ?Thats a bit more difficult to explain.

11、is actually from the beginning the Latin word ad, and the meaning is the same as the English word add. Add 4 and 5 and you get 9. is the Latin word sub, like in submarine, subway, suburb. The meaning is under, after （outside）.Why have the d in and the b in changed into f?The reason is really quite s

12、imple. adfixsubfix are difficult to pronounce. There is economy in everything! You simply leave out the d and the b, but in order to mark their existence the words are spelt with an extra f .So what do affix and suffix actually mean? affix - to attach something to （a word）suffix -to attach something

13、 at the end of （a word） We have now fixed the fixes, havent we? affix - something you add （stick） to a word There are three kinds of affixes:added inside the word - infixadded at the beginning of the word - prefixadded at the end of the word suffix Whats this good for then? Well, there are thousands

14、 of words with prefixes and suffixes. The infixes are fewer and less useful to you. The English vocabulary basically consists of words of Latin and Germanic origin. There are prefixes in both groups.If you know the basic meaning of a prefix or a suffix you can often guess the meaning of an English w

15、ord. There are a limited number of Latin prefixes and suffixes. If you learn the meaning of them, and learn to recognize them in English words, you will increase your vocabulary much fasterStep III Practice Are you ready for some exercises? Open your books and look at Page6. Lets do the exercises. L

16、ets do Exercise 1 first .How are these words formed? （Or show the following words on the PowerPoint）.Step IV WorkbookStep V WORD FORMATION EXERCISES（If there isnt enough time, please print it out and give the handouts to students as homework） Im very glad youve done the exercises quite well. Would y

17、ou like to try some difficult ones?Now look at the following exercises. You are given 8 minutes. Then we will check the answers together. If you have any difficulty, you may work with your partner or refer to a dictionary. （ Show the following exercises on the powerpoint.）Use the word at the end of

18、each gap to form a new word with which to fill the gap. While doing this exercise, look for clues which tell you what kind of word is missing （adjective, noun, verb, adverb）. Make sure to take into consideration forms using various prefixes and suffixes, as well as negative forms.international= inte

19、r-+national telephone= tele-+phone mankind=man+kind broadband= broad+bandextremely=extreme+-ly manned= man+ -edhi-tech= high+technology email= electronic mailIT= information technology CSA= Chinese Space AgencyS1:I think international and telephone are formed in the same way. We add prefix inter- to

20、 national and tele- to phone. Good! What about the others? Mankind and broadband are formed in the same way. Each is made up of two words. Extremely and manned are formed by adding a suffix.Hi-tech is the shortened form of high technology and e-mail is the shortened form of electronic mail.S5: IT st

21、ands for information technology. We use the first letters of the two words to form a new one .We use the first letters of Chinese Space Agency to form the word CSA.T；Well done .So we know that words are formed in these ways. When you come across a new word, you can easily guess the meaning. Ok ,lets

22、 come to Exercise2.Deal with the rest of exercises in the same way.6-2 Warming up & Speaking1. Target Language:a. 重点词汇和短语solar energy, breakthrough, organb. 交际用语Practise expressing intentions and wishes. If I got the money, I would My plan is to. I hope that.I want/ wish/hope/intend/plan to Id like

23、to Im thinking of2. Ability goals: Enable students to talk about scientific achievements. Help them learn to express intentions and wishes.3. Learning ability goals：Talk about great scientific achievements that have changed the world. Practise expressing intentions and wishes by talking about which

24、scientific project is the most important .Teaching important points :Talk about great scientific achievements. Learn the patterns used to express intentions and wishes.Teaching difficult points :How to express intentions and wishes.a tape recorder, a projector and a computer旁注Step I RevisionCheck th

25、e homework. Check the answers on the workbook with the whole class.Ask some students to name some great achievements.Step II Warming upShow the photos of some great scientific achievements that have changed the world on the PowerPoint. Divide students into groups and ask them to discuss which one is

26、 the most important and what these achievements have in common. （The exercises in warming up on Page 1）.Students may have different opinions. The most important thing is to encourage them to think and express their opinions. Please look at these great achievements and work in groups and discuss the

27、following questions. You may have different answers. But you will have to tell us your reasons. （Show the following questions on the PowerPoint.）Five minutes later ask some students to speak out their opinion.Step III Speaking Ok. Suppose we are in the year of 2015. You are scientists. You are worki

28、ng on different projects. All of you need money and want to get money to complete your project. You will introduce your project and explain why it is the most important. One member will listen to all the scientists and ask questions .At the end of the discussion, he or she must decide who will get t

29、he money and why .Now turn your books to Page 2, look at the Speaking part and work in groups of five .Please dont forget the useful expressions. You are given five minutes to do it. Then I will ask some groups to act it out. Show the useful expressions on the PowerPoint.Sample of the speaking:1 Official: I know all of you have your own reasons.1. Among the great scientific achievements that have changed the world, which one do you think is the most important? Why?2. What are some other scien