Question

which part of the speech does the underline words belong to in an old book , an old school ,and a fixed time​

Answer 1

AnswEr :-

1. an old book

an ⇢ determiner (article)

old ⇢ adjective

book ⇢ noun

2. an old school

an ⇢ determiner (article)

old ⇢ adjective

school ⇢ noun

3. a fixed time

a ⇢ determiner (article)

fixed ⇢ adjective

time ⇢ noun

Extra Information :-

In English language, the nine parts of speech are :

1. Noun - Noun is the name of a person, place, animal or thing.

2. Pronoun - A word used in place of noun is a pronoun.

3. Adjective - A word used to describe a noun or a pronoun, is an adjective.

4. Determiner - A determiner is a word that introduces a noun.

5. Verb - A verb is a word that expresses an action.

6. Adverb - A word used to describe an adjective, verb or other adverb, is an adverb.

7. Preposition - A preposition indicates location the relationship between a noun or pronoun and other parts of the sentence.

8. Conjunction - Conjunctions link other words, phrases or clauses together.

9. Interjection - An interjection is used to express a sudden feeling.

Answer 2

Since the underlined parts are not visible, here is the answer and explanation.

an old book ,

an old school ,

and a fixed time​

'a' and 'an' are determiners.

'old', 'fixed' are adjectives

'book', 'school', 'time' are common nouns.

Explanation

Determiner

A determiner is a type of adjective. A determiner always precedes a noun. The function of a determiner is to modify a noun to indicate quantity, possession, specificity, or definiteness.  Many determiners can be used either as adjectives or as pronouns.  Some of the determiners are: a, an, the, this, that, these, those, my, your, his, her, our, their, all, another, any, both, each, either, enough, every, few, fewer, less, little, many, more, most, much, neither, no, one, only, other, several, some, etc.

Adjective

An adjective is a word such as calm, short, tasty, and beautiful. An adjective describes a person, place, or thing. ‘Comparative Form’ and ‘Superlative Form’ of an adjective are used for comparisons. Comparative Form of adjective is used to compare two persons, places, or things; whereas Superlative Form of adjective is used to compare things, persons, or places that are more than two.

Common Noun

COMMON NOUN is a word that refers to an object or thing but is not the name of a particular person, place or thing. For example words such as table, cat, sea, road, boy, girl, etc. are COMMON NOUNS.