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一、Explain-the-fllowing-terms

1． Slang :

【答案】 It refers to casual , very informal speech , using expressive but informal words and expressions.

For some people , slang is equivalent to colloquial speech but for others , it means “undesirable speech”. Usually , “colloquial speech” refe rs to a speech variety used in informal situations with colleagues , friends or relatives ，and “slang” is used for a very informal speech variety which often serves as an “in-group” language for a particular set of people such as teenagers , army recruits , pop-groups etc. Most slang is rather unstable as its words and expressions can change quite rapidly, for example , “Beat it!” “Scram!”，and “Rack off!” for “leave”.

2． Contrastive analysis

【答案】 Contrastive analysis is an approach to analysis of second language acquisition, based on a belief that a more effective teaching pedagogy would come out when the similarities and differences between native language and target language are taken into consideration. By such an analysis , it is supposed that some leaning difficulties could be predicted in terms of language transfer.

3． Prefix

【答案】 In linguistics, a prefix is a type of affix that precedes the morphemes to which it can attach. Prefixes are bound morphemes （they cannot occur as independent words ） . While most languages employ both prefixes and suffixes, prefixes are less common. Some languages employ mostly suffixes and almost no prefixes at all. The use of prefixes has been found to correlate statistically with other linguistic features, such as a verb-object word order and the use of prepositions.

4． Syllable

【答案】 Syllable : It refers to a unit of spoken language that is bigger than a speech sound. It consists of one or more vowel sounds alone or of a syllabic consonant alone or of either with one or more consonant sounds preceding or following.

5． Idiolect

【答案】 Just as every speech community has a dialect, every speaker has his own pet words and expressions and special way of expressing his ideas in language. This language variety of individual users is called “idiolect”

6． The London School of Linguistics

【答案】 The London School generally refers to the kind of linguistic scholarship in England. The man who turned linguistics proper into a recognized distinct academic subject in Britain was J.R. Firth.

7． Presupposition

【答案】 A presupposition is a proposition （expressed in a sentence） that is assumed to be true in order to judge the truth or falsity of another sentence. For example , John didn't pass chemistry presupposes that John took chemistry.

8． Entailment

【答案】 It refers to the relation between propositions one of which necessarily follows from the other. If X is true, Y is necessarily true，and if X is false, Y may be true or false. For example, the sentence “He has been to France” entails “He has been to Europe”.

9． Stem

A stem is a morpheme or combination of morphemes to which an inflectional affix can be 【答案】

added. For example, “friend-” in friends, and “friendship-” in friendships are both stems. The former shows that a stem can be equivalent to a root, whereas the latter shows that a stem may contain a root and a derivational affix.

10．Allomorph

【答案】 A morpheme may take various shapes or forms, and an allomorph is any of the variant forms of a morpheme as conditioned by position or adjoining sounds. For instance, the morpheme of plurality {-s} has a number of allomorphs in different sound context, as in “cats” /s/, in “bags” /z/，in “matches” /iz/.

二、Short-answer-questions

11．In what sense is the standard dialect a special variety of language?

【答案】（1） The standard dialect is a particular variety of a language in that it is not related to any particular group of

language users, but it is the variety which any member of a speech community can possibly use regardless of his social and geographical backgrounds, his gender and age.

（2）The standard dialect is based on a selected variety of the language ; usually it is the local speech of an area which is considered the nation‟s political and commercial center. For example , standard English developed out of the English dialects used in and around London as they were modified over the centuries by speakers in the court, by scholars from universities and writers. Gradually, the English used by the upper classes in the capital city diverged markedly from the English used by other social groups and came to be regarded as the model for all those who wished to speak and write well.

（3）The standard dialect is not a dialect a child acquires naturally like his regional dialect. It is a superimposed variety; imposed from above the range of regional dialects.

（4）The standard dialect has some special functions. Also designated as the official or national language of a country, the standard dialect is used for such official purpose as government documents, education , news reporting; it is the language used on any formal occasions.

12．What is the distinction between inflectional affixes and derivational affixes?

【答案】 The distinction between inflectional morphemes and derivational morphemes could be

illustrated in the following four aspects.

Inflectional affixes very often only add a minute or delicate grammatical meaning to the stem, for instance , those inflectional affixes in words such as toys, walks, John's, etc. Therefore, they serve to produce different forms of a single word. In contrast , derivational affixes often change the lexical meaning , e.g. cite, citation; generate, generation.

Inflectional affixes do not change the word class of the word they attach to，such as flower, flowers ; whereas derivational affixes might or might not, such as the relation between small and smallness for the former, and that between brother and brotherhood for the latter.

Very often inflectional affixes are conditioned by non-semantic linguistic factors outside the word they attach to but within the phrase or sentence. Whereas, derivational affixes are more often based on simple meaning distinctions.

In English, inflectional affixes are mostly suffixes, which are always word final. But derivational affixes can be prefixes or suffixes.

13．What is language variation?

【答案】 It is differences in pronunciation, grammar, or word choice within a language. Variation in a language may be related to region, to social class and/or educational background or to the degree of formality of a situation in which language is used.

For sociolinguists , the most important verity is that a language —any language —is full of systematic variation, variation that can only accounted for by appealing, outside language, to socially relevant force and facts.

Sociolinguistics takes as its primary task to map linguistic variation on to social conditions. This mapping helps understand not just synchronic variation （variation at a single point of time）, but also diachronic variation （variation over time） or language change.

14．Please disambiguate the following 5 sentences, using the tree-diagram, or any other means that you think is appropriate.

（1）Jane showed her baby pictures.

（2）The old man is drinking in the air.

（3）We need more realistic officials to handle the economy.

（4）We are sweeping the ground cigarettes on the street.

（5）Tom exchanged the money and fell around the corner.

【答案】（1）