大学英语语法之existentialsentence.ppt
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Lecture 28 Existential SentenceTeaching objectives:1.Getting to know the structural properties of existential sentences;2.Getting to know the grammatical relationship in existential sentences; Lecturing:1.Structural properties of existential sentences: There + be + NP + locative/temporal adverbialWhat we should pay attention to is the “notion al” or “real subject” that determines the number in verbs.2.Notional subject is usually a noun phrase with indefinite specific reference.3.Predicator in existential sentence includes forms of the verb “be”, finite ornon-finite, simple or perfective. Modals and semi-auxiliary can also be used in the predication. There are also semantically-related verbs that can act as predicator in an existential sentence, including “exist, live, stand, lie, come, go, walk, emerge, develop, happen, occur” , etc.4.Non-finite existential clauses: There to be and there being.There to be, used as prepositional complementation, especially after the word “for”; it can also be used after a certain verbs as object including “expect, mean, intend, want, like, prefer, hate”, etc.There being, used as subject and adverbial.Lecture 29 It-PatternsTeaching objectives:1.Getting to know types of It-patterns;2.Getting to know the grammatical relationships in It-patterns.Lecturing:1. Empty “it”Empty “it”does not refer to anything. It is meaningless and is chiefly used as formal subject in sentences denoting time, place, distance, and atmospheric conditions. And it is also used in sentences denoting a general situation. Besides, it can also be used in some idioms and idiomatic expressions.2. Anticipatory “it”Anticipatory “it” is used in sentences with a nominal clause as subject or object. To make the sentence balanced, the subject is usually shifted to the end of the sentence, and using formal subject to take its place. This kind of extraposition is more frequent than its natural position.3.“It” as introductory word of cleft sentencesThe general pattern of a cleft sentence is: It + be + focal element + that-/ who- clauseGenerally speaking, except the predicator, almost all the elements of a statement can be singled out as the focal element of a cleft sentence. As to the predicator of a cleft sentence, it can be a simple form of the verb “be”; it may also be a complex verb phrase with a form of the verb be as headword, such as “ might have been”.4.Pseudo-cleft sentencesWhen you want to single out the verb phrase as the focal element, you can use what is called “pseudo-cleft sentence”. It is essentially an SVC construction with a what-clause as subject, eg: I gave her a handbag.→What I did was (to )give hera handbag.The other types are “ what-clause + be + noun phrase” and “ noun phrase + be + what-clause”.Lecture 30 CoordinationTeaching objectives:1.Getting to know the types of coordination;2.Getting to know coordinators and their usageLecturing:1.Types of coordinate constructionsCoordination can be on different ranks in grammatical hierarchy. They may be a sequence of coordinated words, phrases, or clause. A coordinate construction can be formed with coordinating devices including coordinators and some punctuation marks. Two coordinated items can be interrupted by an insertion just to lend emphasis to the second item. We must pay attention to the symmetrical organization of coordinate constructions.2.Coordinators semantically consideredThree basic coordinators: “and, or, but”. “yet, so, nor”can function both as conjunctions and as conjunctive adverbs. There are correlative pairs including “both…and, not only… but also, not… nor, neither… nor, either… or”, etc. There are quasi-coordinators like “as well as, as much as, rather than, more than”, etc.They ranked between a coordinator and a subordinator or a complex preposition.Besides, “for” can be used as a coordinator or as a subordinator.HomeworkExercises in the book in the following two lectures.。
I. There be 结构主要用以表达"某处 (某时) 有某人 (某物)", 其基本句型为"There be + 某物或某人 + 某地或某时", 其中there 是引导词, 做形式主语,没有词义; be是谓语动词;"某人或某物"是句子的真正主语;"某地或某时"作句子的状语, 多是介词短语。
There is a cherry tree in my garden.我家花园有一棵樱桃树。
这里there做引导语,形式主语,谓语动词是 is,a cherry tree作为句子的真正主语,介词短语in my garden做状语II. There be 结构中的谓语动词be在人称和数上应与其后的主语保持一致。
主语是不可数名词或单数可数名词时用is,是复数时用areThere is a flower in the bottle.(这里的is,对应后面的单数a flower)瓶子里有一朵花。
There is some money in the purse.(这里的is,对应后面的不可数名词money)钱包里有一些钱。
There are fifteen students in my class.(这里的are和复数形式fifteen students对应)我们班有15个学生。
There are many people in the cinema. (这里的are 和复数形式many people对应)电影院里有很多人。
*people 是集体名词,一般泛指人们,无单复数形式III.若句子中有几个并列的主语时, be的形式要与离其最近的一个主语在人称和数上保持一致(就近原则)There is a boy, a girl and two women in the house.房子里有一个男孩,一个女孩和两个妇女。
There are ten students and a teacher in the office.办公室里有十个学生和一个教师。