

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

Clauses

Part of Speech


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

Direct and Indirect speech


Linguistics

Phonetics

Phonology

Linguistics fields

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Morphology

Semantics

pragmatics

History

Writing

Grammar

Phonetics and Phonology

Semiotics


Reading Comprehension

Elementary

Intermediate

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Teaching Methods

Teaching Strategies

Assessment
Apophony
المؤلف:
Mark Aronoff and Kirsten Fudeman
المصدر:
What is Morphology
الجزء والصفحة:
P173-C6
2026-04-14
63
Apophony
So far we have seen affixation and stem alternations. In some cases affixation is supplemented or replaced by apophony, or vowel changes within a root, as shown below for English (14) and the Bernese dialect of Swiss German (15):

Other terms for apophony are internal change and, particularly when referring to English and other Germanic languages, ablaut. All three of these terms are sometimes applied to the vowel changes that apply to roots in Semitic languages, a topic that we address under the heading root-and-pattern morphology.
In the context of Germanic linguistics, ablaut is often reserved for apophony in verb paradigms, as in (14) and (15). A second term, umlaut, is used to describe the apophony found in singular–plural noun pairs like goose∼geese or foot∼feet. Umlaut is a phonologically conditioned alternation in which a vowel assimilates in part to a succeeding vowel. The term is used even when the succeeding vowel has been lost. For instance, the umlaut seen in the plural forms of the noun pairs goose, geese and foot, feet resulted from vowel harmony with a high vowel in the plural suffix, which has since disappeared.
الاكثر قراءة في Morphology
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قسم الشؤون الفكرية يصدر كتاباً يوثق تاريخ السدانة في العتبة العباسية المقدسة
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