Delhi Forest Guard /English Language

Parts of speech

Grammar · free study notes

🎓 Study Notes – Parts of Speech

(English Language – Competitive Exams: IIT‑JEE, JEE‑Main, NTA‑CBSE, etc.)

Why it matters
In competitive exams, you’ll often have to:

  1. Identify the part of speech of a word in a sentence.
  2. Spot errors in sentences that arise from misuse of a particular part of speech.
  3. Rewrite sentences while preserving meaning.
  4. Answer “Which of the following is/are not a/an …?” type questions.

1. Overview – Eight Parts of Speech

# Part of Speech Definition Typical Indicators Example
1 Noun Person, place, thing, idea, or action. Proper nouns (capitalized), plural forms, countability. “Teacher gave a lecture.”
2 Pronoun Word that substitutes for a noun or noun phrase. Personal, demonstrative, relative, interrogative, reflexive, interrogative. “She will arrive tomorrow.”
3 Verb Action, occurrence, or state of being. Infinitive (“to + base”), present/past/present‑participle/gerund, auxiliary. “They run fast.”
4 Adjective Describes a noun or pronoun. Comparative/ superlative forms, determiners. “A beautiful garden.”
5 Adverb Modifies a verb, adjective, or another adverb. Usually ends in ‑ly, but not always. “She sang beautifully.”
6 Preposition Shows relationship between a noun/pronoun and other words. in, on, at, by, with, to, from etc. “The book is on the table.”
7 Conjunction Connects words, phrases, or clauses. Coordinating (and, but, or, nor, for, yet, so), subordinating (because, although, when), correlative (either‑or, neither‑nor). “I like and you like.”
8 Interjection Expresses emotion or exclamation. Usually stands alone, often punctuated by commas or exclamation marks. “Wow! That’s amazing.”

Tip – In many competitive exams, you’ll be asked to classify a word. A quick mental check:
• Does it name something? → Noun.
• Does it replace a noun? → Pronoun.
• Does it describe something? → Adjective.
• Does it describe a verb or adjective? → Adverb.
• Does it link a noun to another word? → Preposition.
• Does it connect clauses? → Conjunction.
• Is it a standalone exclamation? → Interjection.


2. In‑Depth Descriptions & Derivations

2.1 Nouns

  • Countable vs. Uncountable
    • Countable: book, books – can use a/an.
    • Uncountable: information, happiness – no a/an.
  • Derived Forms
    • Agent nouns: teach → teacher (‑er, ‑or).
    • Result nouns: teach → teaching (‑ing).
    • Abstract nouns: happy → happiness (‑ness).

2.2 Pronouns

  • Personal: I, you, he, she, it, we, they.
  • Demonstrative: this, that, these, those.
  • Relative: who, whom, which, that.
  • Interrogative: who, what, which, whom.
  • Possessive: my, your, his, her, its, our, their.
  • Reflexive: myself, yourself, himself, herself, itself, ourselves, themselves.

Tricky Point – Relative pronouns can be who (subject) or whom (object), but whom is rarely used in contemporary speech.
Rule – If the pronoun can be replaced by he/she → who; if by him/her → whom.

2.3 Verbs

  • Tenses – 12 standard forms (Simple, Progressive, Perfect, Perfect‑Progressive × 3 tenses).
  • Mood – Indicative, imperative, subjunctive.
  • Voice – Active vs. passive.

Derivation – to + base is infinitive; verb + ing forms gerund (noun) and present‑participle (adjective).
Tricky Point – be is irregular: am, is, are (present); was, were (past).

2.4 Adjectives

  • Attributive – before noun.
  • Predicative – after linking verb.
  • Comparatives & Superlatives – more/most + adjective or ‑er / ‑est.
  • Degree – positive, comparative, superlative.

Rule – If the adjective can be swapped with very → it’s a degree adjective.

2.5 Adverbs

  • Formation – Usually ‑ly (quick → quickly).
  • Adverbial phrases – in the morning, with great enthusiasm.
  • Double‑adverbial – He spoke very loudly.

Tricky Point – Some adverbs are identical to adjectives (*fast, hard,

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