Grammar
Tenses
Present
Present Simple
Present Continuous
Present Perfect
Present Perfect Continuous
Past
Past Continuous
Past Perfect
Past Perfect Continuous
Past Simple
Future
Future Simple
Future Continuous
Future Perfect
Future Perfect Continuous
Passive and Active
Parts Of Speech
Nouns
Countable and uncountable nouns
Verbal nouns
Singular and Plural nouns
Proper nouns
Nouns gender
Nouns definition
Concrete nouns
Abstract nouns
Common nouns
Collective nouns
Definition Of Nouns
Verbs
Stative and dynamic verbs
Finite and nonfinite verbs
To be verbs
Transitive and intransitive verbs
Auxiliary verbs
Modal verbs
Regular and irregular verbs
Action verbs
Adverbs
Relative adverbs
Interrogative adverbs
Adverbs of time
Adverbs of place
Adverbs of reason
Adverbs of quantity
Adverbs of manner
Adverbs of frequency
Adverbs of affirmation
Adjectives
Quantitative adjective
Proper adjective
Possessive adjective
Numeral adjective
Interrogative adjective
Distributive adjective
Descriptive adjective
Demonstrative adjective
Pronouns
Subject pronoun
Relative pronoun
Reflexive pronoun
Reciprocal pronoun
Possessive pronoun
Personal pronoun
Interrogative pronoun
Indefinite pronoun
Emphatic pronoun
Distributive pronoun
Demonstrative pronoun
Pre Position
Preposition by function
Time preposition
Reason preposition
Possession preposition
Place preposition
Phrases preposition
Origin preposition
Measure preposition
Direction preposition
Contrast preposition
Agent preposition
Preposition by construction
Simple preposition
Phrase preposition
Double preposition
Compound preposition
Conjunctions
Subordinating conjunction
Correlative conjunction
Coordinating conjunction
Conjunctive adverbs
Interjections
Express calling interjection
Grammar Rules
Preference
Requests and offers
wishes
Be used to
Some and any
Could have done
Describing people
Giving advices
Possession
Comparative and superlative
Giving Reason
Making Suggestions
Apologizing
Forming questions
Since and for
Directions
Obligation
Adverbials
invitation
Articles
Imaginary condition
Zero conditional
First conditional
Second conditional
Third conditional
Reported speech
Linguistics
Phonetics
Phonology
Semantics
Pragmatics
Linguistics fields
Syntax
Morphology
Semantics
pragmatics
History
Writing
Grammar
Phonetics and Phonology
Semiotics
Reading Comprehension
Elementary
Intermediate
Advanced
Teaching Methods
Teaching Strategies
nucleus (n.)
المؤلف:
David Crystal
المصدر:
A dictionary of linguistics and phonetics
الجزء والصفحة:
334-14
2023-10-18
951
nucleus (n.)
A term used by some INTONATION analysts, particularly those working within the British tradition, to refer to the SYLLABLE in a TONE UNIT which carries maximal PROMINENCE, usually due to a major PITCH change. The nuclear syllable (sometimes represented as N) is also referred to as the TONIC syllable. In GENERATIVE PHONOLOGY, the analogous notion is nuclear stress, with the relevant STRESS-ASSIGNMENT RULE referred to as the Nuclear Stress Rule (NSR). In the normal, unemphatic version of the sentence The lady saw the dog, the last word is nuclear, and will carry one of the possible nuclear tones in English. The nuclear tone is the most prominent pitch movement in a tone unit. In English, analyses of nuclear tones vary, but most recognize such contrasts as FALLING (transcribed with ` above or before the SYLLABLE in question), RISING ´, rising-falling ˆ, falling-rising ˇ and level ¯. Others are possible, including distinctions within these types, such as ‘high’ v. ‘low’ fall.
In GRAMMAR and SEMANTICS, the term is sometimes used to refer to the essential SUBJECT–PREDICATE or NP–VP STRUCTURE of a simple SENTENCE. Nuclear predications play a central role in FUNCTIONAL GRAMMAR.
In PHONOLOGY, the sub-CONSTITUENT of the syllable RHYME consisting of the HEAD of the syllable and any on- and OFF-GLIDES.
الاكثر قراءة في Phonetics
اخر الاخبار
اخبار العتبة العباسية المقدسة

الآخبار الصحية
