Parts of Speech: Rules, Examples and Practice

Learning objectives

By the end of this lesson, you should be able to identify the main word classes, explain their jobs, distinguish commonly confused forms, and use the rules in your own sentences.

Recognise nouns, pronouns, verbs, adjectives, adverbs, prepositions, conjunctions and interjections.
Understand determiners, which are commonly taught alongside parts of speech in modern grammar.
Classify a word by how it is used in a sentence rather than by memorising the word alone.

1. What are parts of speech?

A part of speech (also called a word class) groups words according to their grammatical behaviour and function. Words combine to make phrases and sentences. Identifying a word class helps you understand how a sentence is built and which forms can fit a particular position.

Example: “The careful student answered quickly.” Student is a noun, careful describes the noun and is an adjective, answered is the verb, and quickly modifies the verb and is an adverb.

বাংলা সহায়তা: Parts of Speech হলো বাক্যে শব্দের কাজ বা শ্রেণি। কোনো শব্দের বাংলা অর্থ জানলেই তার grammatical role বোঝা যায় না; বাক্যে শব্দটি কী কাজ করছে, সেটিও দেখতে হয়।

2. The main word classes

Word class	Main job	Examples	Example in a sentence
Noun	Names a person, place, thing, idea or quality.	teacher, Dhaka, book, honesty	Honesty matters.
Pronoun	Stands in for a noun phrase or refers to a participant.	I, you, she, them, who	She called us.
Verb	Expresses an action, event or state.	write, grow, seem, know	They seem ready.
Adjective	Describes or limits a noun or pronoun.	bright, careful, blue	It is a bright room.
Adverb	Modifies a verb, adjective, another adverb or a whole clause.	carefully, very, often	She spoke carefully.
Preposition	Introduces a phrase expressing a relation such as place, time or direction.	in, at, under, during	The keys are under the book.
Conjunction	Connects words, phrases or clauses.	and, but, because, although	I stayed because it rained.
Interjection	Expresses a reaction or emotion, often outside the sentence structure.	Oh!, Wow!, Ouch!	Ouch! That hurt.

Note on determiners: Words such as a, the, this, those, some, many and each help specify or quantify nouns. Traditional school grammar sometimes groups them with adjectives; many modern grammars treat determiners as a separate word class. For exam questions, follow the terminology used by the relevant syllabus or question source.

3. Learn each class through examples

Nouns and pronouns

A noun can name a concrete object (pencil) or an abstract idea (freedom). A pronoun may avoid repeating a noun phrase: “Rina has a book. She reads it every day.” Here, she refers to Rina and it refers to the book.

Common error: “Me and Rafi went home.” In standard formal English, write “Rafi and I went home.” The pronoun is the subject of went.

Verbs

Verbs can show actions (run), events (happen) or states (belong, know). A verb phrase may include an auxiliary: “They have been studying.” The full verb phrase expresses the tense and aspect.

Common error: “She go to school every day.” With a third-person singular subject in the present simple, use “She goes to school every day.”

Adjectives and adverbs

Adjectives typically describe nouns: “a careful driver.” Adverbs often describe how an action happens: “The driver drove carefully.” Some adverbs do not end in -ly, such as often, well, fast and very.

Compare: “He is a fast runner” (adjective describing runner) and “He runs fast” (adverb modifying runs).

Prepositions

Prepositions commonly introduce noun phrases: “at noon,” “under the table,” “after lunch.” The preposition and its complement form a prepositional phrase. Some words can have other roles in different contexts.

Conjunctions

Coordinating conjunctions such as and, but and or connect items of similar grammatical status. Subordinating conjunctions such as because, although and if introduce dependent clauses.

Compare: “I wanted to go, but I was tired.” (contrast) · “I stayed home because I was tired.” (reason)

Interjections

Interjections express a spontaneous reaction: “Wow! That is impressive.” They are often separated by punctuation and do not normally function as the main grammatical element of the sentence.

4. One word can belong to different classes

Do not decide a word’s part of speech from its spelling alone. Examine its role in the sentence.

Word	Sentence	Role	Why?
book	I borrowed a book.	Noun	It names a thing.
book	Please book a seat.	Verb	It expresses an action.
light	The light is on.	Noun	It names a source of illumination.
light	This bag is light.	Adjective	It describes the bag’s weight.
after	We met after lunch.	Preposition	It introduces the noun phrase “lunch”.
after	We met after the class ended.	Subordinator / conjunction in school grammar	It introduces a clause with a subject and verb.

5. A simple method for identifying a word class

Read the whole sentence before classifying the target word.
Ask what the word is doing: naming, referring, expressing, describing, modifying, relating, connecting or reacting?
Check its neighbours. Does it describe a noun, follow an auxiliary, introduce a phrase or connect two clauses?
Test the answer by replacing the word with another word that performs the same function.
If a question uses a particular grammar tradition, check how that syllabus classifies borderline cases such as determiners and subordinators.

6. Guided practice

Identify the part of speech of the bold word in each sentence. Try answering before opening the answer key.

The honest officer explained the rule.
We arrived early.
They completed the assignment.
The cat slept under the chair.
I wanted to join, but I was busy.
The children laughed loudly.
Wow! You solved it quickly.
She gave me some useful advice.
Please close the window.
He answered the question correctly.
We stayed inside because it was raining.
That is a light suitcase.

Show answer key and explanations

Adjective — “honest” describes the noun “officer”.
Adverb — “early” tells when we arrived.
Pronoun — “they” refers to the people completing the assignment.
Preposition — “under” introduces the phrase “the chair” and expresses place.
Conjunction — “but” connects two contrasting clauses.
Verb — “laughed” expresses an action/event.
Interjection — “Wow!” expresses a reaction.
Determiner — “some” specifies an indefinite quantity of advice.
Verb — “close” is a command expressing an action.
Adverb — “correctly” modifies the verb “answered”.
Subordinating conjunction in traditional school grammar — “because” introduces the reason clause.
Adjective — “light” describes the suitcase’s weight.

মনে রাখুন: “some” এখানে determiner হিসেবে ব্যবহৃত হয়েছে। বিভিন্ন grammar book-এ word-class terminology কিছুটা আলাদা হতে পারে; পরীক্ষার সিলেবাসের সংজ্ঞা অনুসরণ করুন।

7. Quick revision checklist

I can explain the main job of each traditional part of speech.
I can distinguish an adjective from an adverb in a sentence.
I can identify the verb phrase, including auxiliary verbs.
I understand why determiners are sometimes taught separately.
I check a word’s function in context instead of classifying it from memory alone.

If one item is difficult, review that section and create two of your own examples before moving on.

Continue learning and practise

This resource teaches the rule; the separate quiz library provides additional MCQ practice. Read explanations for incorrect answers and revisit the corresponding lesson section.

Open Grammar Quiz Library Next: Sentence and Its Elements →Return to Grammar Roadmap All Resources

Editorial note: This lesson explains standard usage and notes where grammar terminology can vary between traditional school grammar and modern linguistic descriptions.