Summary of Comprehensive English Grammar Guide

## Introduction This study guide gives a clear, practical overview of core English grammar for self-study. It explains word classes, sentence elements, verb types and the main uses of the base form (infinitive), with examples and short practice items. Use it to review basics, check terminology and practise identifying structures in sentences. > Definition: Grammar is the system of rules and patterns that govern how words combine to make sentences in a language. ## 1 Word classes (parts of speech) Word classes are categories of words that share grammatical behaviour. The main classes: - **Nouns**: names of people, places, things, ideas. Examples: student, city, freedom. - **Determiners**: words that introduce nouns and show reference. Examples: a/an, the, this, some. - **Adjectives**: describe or modify nouns. Examples: big, red, important. - **Verbs**: express actions, states or occurrences. Examples: run, be, think. - **Adverbs**: modify verbs, adjectives or other adverbs (how, when, where, why). Examples: quickly, here, very. - **Prepositions**: show relationships of time, place or other relations between items. Examples: in, on, before, between. - **Pronouns**: substitute for nouns. Examples: I, you, he, it, who. - **Conjunctions**: link words, phrases or clauses. Examples: and, but, because, although. > Definition: A part of speech is a category of words grouped by similar grammatical properties. Table: quick comparison | Class | Function | Examples | | --- | --- | --- | | Noun | Name person/thing | student, idea | | Determiner | Introduce noun | the, a, this | | Adjective | Modify noun | blue, angry | | Verb | Show action/state | go, have, seem | | Adverb | Modify verb/adj | now, very, well | | Preposition | Link words/phrases | at, between, during | | Pronoun | Replace noun | they, someone | | Conjunction | Join elements | and, because | Did you know that many prepositions can be used idiomatically in phrasal verbs (e.g. give up, take off) and their meaning changes with the verb? ## 2 Choosing the odd word (practice tip) To pick the odd one out in a set, identify the shared word class of most items and spot the mismatch. Example set: built, door, garden, room, window — built is a verb (others are nouns). Quick strategy: 1. Check word forms (ending, capitalization). 2. Substitute a test word in a sentence slot (e.g. noun slot) to see if it fits. 3. Watch for modal/auxiliary verbs vs full verbs. ## 3 Types of verbs and auxiliaries - **Full (lexical) verbs**: carry the main meaning (believe, like, say, want). - **Primary verbs**: be, do, have — these can be full verbs and auxiliaries. - **Modal auxiliaries**: can, could, may, might, must, shall, should, will, would — express modality (possibility, necessity, permission, etc.). > Definition: An auxiliary is a helping verb used with a main verb to form tense, mood or voice (e.g. have eaten, is coming, can go). Fun fact: Modal auxiliaries do not take -s in the third-person singular present (he can, not *he cans*) and they are followed by the base form of the verb. ## 4 The base form (bare infinitive / dictionary form) — five main uses The base form is the uninflected verb form you find in dictionaries (e.g. believe, come, do). It appears in several distinct functions: 1. Present simple (with plural subjects or non-3rd-person singular): "I/they often come here." (present) 2. Imperative: "Come at once!" (commands) 3. Subjunctive (mandative subjunctive): "They demanded that I come to the office." (subordinate clause expressing demand/necessity) 4. After certain adjectives and verbs with "to" construction: "They wanted me to come." (to-infinitive with adjective/verb) 5. After modals (bare infinitive): "I can come tomorrow." (modal + base) > Definition: The base form (bare infinitive) is the verb form without tense or agreement marking, used after modals, in imperatives and in certain subordinate constructions. Examples (identified uses): - Listen carefully. —