高中英语-Unit1-Word-power教案-译林牛津版必修4.doc

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1、英语必修4译林牛津Unit 1精品教案（3）WordWord powerWell learn in this section some common suffixes that can be added to nouns or verbs to create adjectives. And also some vocabulary related to sales and marketing. Step 1: Brainstorming1. Please think about the following questions:How are the following words formed

2、?health (noun) healthy(adjective) interest (verb) interesting (adjective)An English word can have several derivatives. And please pay attention to the fact that many English words share the same root word, even though they have different meanings or parts of speech.Now heres more example for you to

3、better understand word formation.breath (n.) breathe (v.) breathless (adj.)act (v.) action (n.) actor (n.) actress (n.) activity (n.)possible (adj.) impossible (adj.) possibility (n.) possibly (adv.)friend (n.), friendly (adj.), friendless (adj.), friendship (n.), unfriendly (adj.)As you can see, ma

4、ny words are derived by adding suffixes or prefixes to the root words. Often you may come across unfamiliar words while reading, try to use knowledge of word formation to guess their meanings. Will you? And can you give more examples about word formation?2. Shall we have a competition to see who can

5、 give more examples or create more words by adding suffixes or prefixes to the root words?3. As we know, sometimes an English word can be made up of three parts: a prefix, a stem and a suffix. A stem is the main part of a word. A prefix is a group of letters added to the beginning of a word. A suffi

6、x is a group of letters placed at the end of a word. Both prefixes and suffixes modify the meaning of a word or change it into a different word group. The following is a table of common prefixes:PrefixMeaning Examples (adjectives)un-Notunfair, unnecessary, unimportant, unhappyin-Notincorrect, invisi

7、ble, incurable, inaccuratedis-showing oppositedisable, dishonest, disagree, disappear, discoverre-do againrewrite, redo, rebuild, react, retell, recreatemis-badly or wronglymisunderstand, misdirect, mistake, misuseStep 2: Learning about Word formation The basic part of any word is the root; to it, y

8、ou can add a prefix at the beginning and/or a suffix at the end to change the meaning. For example, in the word 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).English it

9、self does not use prefixes as heavily as it once did, but many English words come from Latin, which uses prefixes and suffixes (you can use the word affix to refer either to a prefix or a suffix) quite extensively. For example, the words prefix, suffix, and affix themselves are all formed from fix b

10、y the use of prefixes: ad (to) + fix (attached) = affix pre (before) + fix = prefix sub (under) + fix = suffix Note that both the -d of ad and the -b of sub change the last letter.Here are some of the most common Latin prefixes (for the meanings of the Latin roots, look up the words in a good dictio

11、nary):ab (away) abrupt, absent, absolve ad (to) adverb, advertisement, afflict in (not) incapable, indecisive, intolerable inter (between, among) intercept, interdependent, interprovincial intra (within) intramural, intrapersonal, intraprovincial pre (before) prefabricate, preface prefer post (after

12、) postpone, postscript, postwar sub (under) submarine, subscription, suspect trans (across) transfer, transit, translate Step 3: Ready used materials for Word formationAffixesMorphemes added to free forms to make other free forms are called affixes. There are three principle kinds of affixes: 1. pre

13、fixes (at beginning) un- in unable 2. suffixes (at end) -ed in walked 3. circumfixes (at both ends) en-en in enlighten (These always seem to consist of otherwise attested independent prefixes and suffixes.) A Rule for Forming some English WordsConsider the following pairs of English words: Adjective

14、 Verb dark darken black blacken red redden steep steepen What generalization (rule) can we make? Form: en Combination: At the end of Adjectives (suffix) to make Verbs Meaning: to make (more) Adjective We can draw a diagram to show the internal structure of one of the words: Verb / Adjective -en | bl

15、ackMeaning: to make (more) blackLikewise we can draw a partial structure (tree diagram) which shows the three properties of rule of combination for the affix: Verb / Adjective -enMeaning: to make (more) Adjective Another Rule for Forming some English WordsConsider the following pairs of English word

16、s: Verb Noun sing singer dance dancer write writer compute computer What generalization (rule) can we make? Add -er to the end of Verbs to make Nouns with the meaning someone (or sth.) that Verbs Noun / Verb -erMeaning: someone (or something) that VerbsRules that dont change categorySome affixes cre

17、ate the same kinds of words that they attach to, such as making nouns out of other nouns: Noun / Noun -ian |BostonMeaning: someone from BostonZero MorphemesSome affixes consist of no sounds at all. Zero morphemes DO exist, and well see why, and illustrate another concept, allomorphy at the same time

18、. Consider the following words: Adjective Verb yellow yellow brown brown green green purple purple The relation between yellow (adjective) and yellow (verb) is exactly the same as that between white and whiten, which we just considered. But the form of yellow doesnt change. So we say that we added a

19、 zero suffix: Verb / Adjective - |yellowMeaning: to make (more) yellowZero morphemes are obviously hard to spot because you cant hear them! In these cases you have to notice what ISNT there. (Sherlock Holmes solves one of his cases by noticing that a dog DIDNT bark. This was important because there

20、was a situation where any dog would have barked. This is the kind of thinking you have to do to find zero morphemes.) AllomorphyBut now we have two ways to make Adjectives into Verbs meaning to make (more) Adjective: -en (black-en) and - (yellow-) How do we know which rule to use? That is, why not y

21、ellow-en? One possible (but uninteresting) answer is that we just have to memorize which affix to use for each stem. That is, we just memorize that black takes -en and yellow takes -. But we would like a better explanation. As with the phonology problems, the best place to look is near where the aff

22、ix attaches. Since -en is a suffix, lets look at the end of the stems. What we find is that we can divide the Adjectives into two classes based on what the last SOUND (NOT letter) of the stem is: Use -en if the last sound is: p deep-en f stiff-en v live-en t white-en d redd-en s less-en fresh-en k d

23、ark-en Use - if the last sound is: e gray- (His hair grayed (gray-ed) before he was twenty.) n brown- m dim- l purple- r clear- We can use the same type of diagrams, and indicate the conditions: Verb / Adjective -en if Adjective ends in an obstruent (oral stop or fricative) - if Adjective ends in a

24、sonorant (nasals, approximants, vowels)Meaning: to make (more) AdjectiveWhen we did phonology problems, we had a notion of default or elsewhere. The same concept can arise in morphology, although in this case the choice is made difficult by the clean cut between obstruents and sonorants. It is true,

25、 however, that there are exceptions to this rule with certain unusual adjectives: Verb / Adjective -en if Adjective ends in an obstruent (oral stop or fricative) - ElsewhereMeaning: to make (more) AdjectiveAnother example of allomorphy in English is the choice of the negative prefix il-/ir-/im-/in-.

26、 The rules are: Use il- when the stem begins with l: il-legal Use ir- when the stem begins with r: ir-responsible Use im- when the stem begins with m, b, p: im-mobile im-balanced, im-possible Otherwise (elsewhere) use in-: in-active, etc. In a diagram: Adjective / when Adjective begins with l: il- A

27、djectivewhen Adjective begins with r: ir-when Adjective begins with a bilabial: im-Elsewhere: in-Meaning: not AdjectiveNotice here that there is a clear case that applies when the other (more specific) rules cannot. This is the DEFAULT or ELSEWHERE rule. The ELSEWHERE concept plays an important role

28、 in linguistics and we have already encountered it in phonology and we will encounter it again in this course. Finally, some allomorphy is simply exceptional. There are morphemes which are used with only a limited number of words, such as plural -en as in ox-en, child-(r)en. Furthermore, some words

29、are so irregular that they have no internal analysis, for example went is the SUPPLETIVE form for what would otherwise be go-ed. Children often use words like *go-ed (went) or *hold-ed (held). These are called OVERGENERALIZATION errors because the children use a regular productive process on excepti

30、onal words. CompoundsThe combination of two free forms is called a COMPOUND. Noun / Adjective Noun | | black birdMeaning: a particular kind of birdIn English the HEAD of a compound is usually the right-hand member (bird). The head supplies the category (Noun) and basic meaning (bird-ness) for the wh

31、ole compound. Compounds can be used with affixation to produce larger words: Noun / Verb -er / Verb Verb | |sleep walkMeaning: Someone who walks and sleeps at the same time Noun / Noun Noun | / window Verb -er | painterMeaning: Someone who paints windowsBound RootsBoth blackberry and blueberry are k

32、inds of BERRIES, and black and blue exist as free forms too. So these look like fine compounds. But what about cranberry, huckleberry, strawberry? Wed like to keep the berry part separate, but then what are cran, huckle and straw? We call these cases BOUND ROOTS.Homophonous MorphemesSometimes two mo

33、rphemes have the same pronunciation (form) with different meanings. One example form English is the two morphemes un-: Adjective / un- AdjectiveMeaning: not Adjective, for example unhappy Verb / un- VerbMeaning: do the reverse of Verb, for example undo, untie, unlatchThis can lead to ambiguity in so

34、me words with un-, such as un-tie-able. There are two possible structures for un-tie-able: Adjective / Verb -able / un- Verb | tieMeaning: able( un (tie) ) = can be untied Adjective / un- Adjective / Verb -able | tieMeaning: un( able (tie) ) = cant be tiedThe relative scope of un- and -able is diffe

35、rent in these two cases, leading to a difference in meaning. The difference in meaning also correlates with whether un- is modifying a verb or an adjective. When a difference in meaning correlates with a difference in structure like this we call this STRUCTURAL AMBIGUITY. Structural ambiguity is a v

36、ery important concept. We will see exactly the same thing when we analyze sentences. Other ways of Forming Words Back formations Where one falsely uses a rule. peddler refers to a person analyze peddler as peddle + -er Blends: smoke + fog = smog; motor + hotel = motel Words from Names: jumbo, sandwi

37、ch Truncation (Clipping): gym(nasium), (tele)phone Acronyms: AIDS = Acquired Immune Deficiency SyndromeOther references:句式合成词整个句子当作一个词用，有的已经固定下来，例如pick-me-up（兴奋剂），whats-his-name（某某人）。整个句子用作形容词的现象比较普遍，把复杂的概念揉成单纯的限制语使行文紧凑。A let-bygones-be-bygones manner（一种“过去的就算了吧”的态度） an if-you-would-only-be-guided-b

38、y-me expression（一种“要是你肯听了我的话多好”的神气）否定前缀（1）纯粹表示否定的a-, an- 能构成少数新词。加在名词、形容词上，表示没有“某种性质“。如:amoral=unmoral不道德，asexual无性别的。a-在元音前变成an-如anonymous onoma=name匿名的dis-加在名词、形容词、动词上，表示否定, 如：disadvantage(劣势)，disagreement(不和)，disbelieve(不相信)。（2）表示“错误”的mis- 多作重读，表示“wrongly，badly”。可以适当构造新词：大多用于动词：to misbehave（行为不当）

39、misunderstand（误解）。用于作形容词的分词：misbelieving（信仰不当），misleading（靠不住）。用于动名词：misdealing（不正当手段）。偶而，mis-也表示纯粹的否定词义：to mistrust。（3）表示“反对”anti- 表示“反对，反面” ， 如： anti-social（反社会的） antiseptic（防腐剂） anti-militarist（反军国主义者）。contra- 表示“反对，相反” ， 如： contradiction（矛盾） contrast（对比） contrary（相反的）；counter- 表示“against” ， 如： c

40、ounteract（还手） counterattack（反攻）。其他前缀前缀大都表示空间，时间，逻辑上的关系，意思上有引申。ab- apo- se- 这几个前缀或多或少都有“away ，off”的含义。ab- a- abs- 在p， m， v之前作a-，在c， t之前作abs-，不能构造新词，表示“away ，apart， absence”，例如：absent， avoid。se- 表示“separation”（分离），例如：segregate（隔离），sedition（反叛）。ante-，fore- pre-这几个前缀都有“before”的意思。ante- 表示在前，例：ante-humou

41、s（死前），ante-room（前厅）。fore- 表示时间，空间上的“在前面”，例forehead（前额），foregraound（前景），foretell（预言）。pre- 表示事先，在前，例prehistory（史前），prepayment（预支）。post- 表示时间空间上的在后，例：posterity（后代），post-war（战后）。pro- 表示“代替，利于，亲于”，例pro-chancellor（代大学校长），pro-consul（代理领事）。circum- peri- 这两个前缀跟圆周有关。circum- 表示圆周，如circumference， circumlocution

42、， circumpolar。peri- 表示“round”，如perimeter（周长），perisphere（势力范围）。课后练习Many of us mistakenly believe that its wrong to think we have any good qualities. We may spend a lot of time blaming ourselves for our negative qualities, thinking that self criticism is the key to improving our performance. However,

43、a constant focus on our supposed shortcomings can stop our efforts to make friends with other people. How can we believe that others could like us if we believe our inner being is flawed（有缺陷）? If someone seems to dislike you, the reason for that dislike might have little or nothing to do with you. T

44、he person who doesnt like you might be fearful, or shallow, or busy or shy. Perhaps you and that person are simply a mismatch for each other at this particular time. Dont take yourself out of the game by deciding that your flaws are bigger than your good qualities. In fact, some of the very qualities you consider to be flaws may be irresistible to someone else. For all the factors that might cause one person to reject you, there are at least as many factors that will work in your favor with someone else. You might be thirty pounds over your