

Grammar


Tenses


Present

Present Simple

Present Continuous

Present Perfect

Present Perfect Continuous


Past

Past Simple

Past Continuous

Past Perfect

Past Perfect Continuous


Future

Future Simple

Future Continuous

Future Perfect

Future Perfect Continuous


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

Animate and Inanimate nouns

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

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

Adverbs


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

Pronouns


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

prepositions


Conjunctions

Subordinating conjunction

Correlative conjunction

Coordinating conjunction

Conjunctive adverbs

conjunctions


Interjections

Express calling interjection

Phrases

Sentences


Grammar Rules

Passive and Active

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

Demonstratives

Determiners


Linguistics

Phonetics

Phonology

Linguistics fields

Syntax

Morphology

Semantics

pragmatics

History

Writing

Grammar

Phonetics and Phonology

Semiotics


Reading Comprehension

Elementary

Intermediate

Advanced


Teaching Methods

Teaching Strategies

Assessment
perfect (adj./n.) (perf, PERF, PF)
المؤلف:
David Crystal
المصدر:
A dictionary of linguistics and phonetics
الجزء والصفحة:
356-16
2023-10-24
1129
perfect (adj./n.) (perf, PERF, PF)
A term used in the GRAMMATICAL description of VERB FORMS, referring to a contrast of a temporal or durative kind, and thus sometimes handled under the heading of TENSE (e.g. ‘perfect’, ‘future perfect’, ‘pluperfect’) and sometimes under ASPECT (e.g. ‘perfective’, ‘non-perfective’). It is illustrated in English by the contrast between I go and I have gone, or between I have gone and I had gone (traditionally called the pluperfect, also now past perfect). LINGUISTS prefer an aspectual analysis here, because of the complex interaction of durational, completive and temporal features of meaning involved; TRADITIONAL grammars, however, refer simply to ‘perfect tense’, etc., and thus imply a meaning which is to some degree an oversimplification. ‘Perfect’, in these contexts, refers to a past situation where the event is seen as having some present relevance; in perfective aspect, by contrast, a situation is seen as a whole, regardless of the time contrasts which may be a part of it. Perfective then contrasts with imperfective or non-perfective, which draws attention to the internal time-structuring of the situation. The terminological distinction between ‘perfect’ and ‘perfective’ is often blurred, because grammarians writing on English have often used the latter term to replace the former, presumably because they wish to avoid its traditional associations. But this can lead to confusion in the discussion of those LANGUAGES (such as the Slavic languages) where both notions are required. In such languages as Russian and Polish, for example, a contrast between perfective and imperfective is fundamental to verb classification, and is formally marked MORPHOLOGICALLY. For example, the PREFIX προ- (‘pro-’) before the verb ‘read’ produces a ‘perfective verb’ where the meaning is that the action (of reading) is completed; in the ‘imperfective verb’, which lacks the prefix, there is no such implication.
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