Big picture
Grammar describes how words work together to express meaning. In an examination, you may complete a dialogue, edit an incorrect sentence, choose a verb form or report somebody's words. These tasks test the relationship between form and context: a sentence can look familiar yet express the wrong time, number or intention.
Imagine writing an announcement that says, “The buses leaves after lunch.” Readers may understand the message, but the agreement error weakens its accuracy. Learning how to find the subject, identify the time frame and preserve the speaker's meaning gives you a dependable way to correct such sentences and improve your own writing.
Learning goals
Identify subjects, finite verbs, phrases and clauses in a sentence.
Choose tenses using time, completion and duration clues.
Apply subject–verb agreement, determiners and modal meanings.
Report statements, questions and requests without changing their intention.
Combine and transform sentences while preserving logical relationships.
Edit grammar, punctuation and word order systematically.
Core ideas
1. Find the sentence skeleton
A subject identifies what a clause is about; a predicate says something about it. The finite verb carries tense or agrees with a subject. In “The children near the gate are waiting,” the subject head is “children,” the finite verb is “are,” and “near the gate” merely describes the children. It does not make “gate” the subject.
A phrase is a group functioning as a unit without a subject–finite-verb combination, such as “after the match.” A clause contains such a combination: “after the match ended.” A main clause can stand independently; a subordinate clause depends on another clause. “Because the road flooded” is incomplete on its own in formal writing. Complete it: “Because the road flooded, the bus took another route.”
2. Choose the present and past forms by meaning
Tense locates a situation in time; aspect shows whether it is ongoing or viewed as completed. Do not choose a form merely because a sentence contains a familiar time word.
Form | Main use | Original example |
|---|---|---|
Simple present | Habit or general truth | The library opens after assembly. |
Present continuous | Action happening around now | Workers are repairing the gate. |
Present perfect | Past action linked to the present | We have misplaced the key. |
Present perfect continuous | Activity continuing over a period | She has been practising since morning. |
Simple past | Completed past action | The caretaker found the key yesterday. |
Past continuous | Action in progress at a past time | We were waiting when the rain began. |
Past perfect | Earlier action before another past event | The bus had left before we arrived. |
Past perfect continuous | Duration before a past point | He had been walking for an hour when help arrived. |
Incorrect: “She has finished the task yesterday.” Correct: “She finished the task yesterday.” A finished past time normally takes the simple past. Incorrect: “I am knowing the answer.” Correct: “I know the answer.” Verbs expressing states, such as “know” and “belong,” do not normally take a continuous form in these meanings.
3. Handle future reference and time expressions
English expresses future meaning in several ways. “We will discuss it tomorrow” can make a prediction or decision. “We are going to repair the shelf” expresses a plan. “We are meeting the librarian tomorrow” presents an arrangement. “The train leaves at dawn” uses the simple present for a timetable.
In a future time clause introduced by “when,” “before” or “as soon as,” normally use a present form: “We will leave when the rain stops,” not “when the rain will stop.” With duration, since gives a starting point and for gives a period: “since Tuesday,” “for three days.” Incorrect: “She has waited since two hours.” Correct: “She has waited for two hours.” The difference is about meaning, not merely memorising a pair of words.
4. Make the verb agree with the actual subject
Subject–verb agreement usually makes a singular subject take a singular verb and a plural subject take a plural verb in the present tense. “The box of chalk sticks is missing”: the subject head is “box,” not “sticks.” “Each of the players has a badge”: “each” is singular even though “players” is plural.
Pattern | Correct example | Reason |
|---|---|---|
Two subjects joined by and | Tara and I are ready. | Normally plural |
Each, everyone, somebody | Everyone knows the route. | Singular grammatical subject |
Either…or / neither…nor | Neither the teacher nor the pupils are late. | Verb agrees with the nearer subject |
Uncountable noun | The information is useful. | Not treated as a plural count noun |
A number of | A number of pupils are absent. | Refers to several pupils |
The number of | The number of pupils is rising. | Refers to one total |
Incorrect: “Neither the pupils nor the teacher are late.” Correct: “Neither the pupils nor the teacher is late.” With “I” and “you,” remember the special forms “I am,” “you are,” “I have” and “you have.”
5. Select determiners through countability and reference
A determiner introduces or limits a noun. Use a/an for a singular countable noun that is not yet specifically identified. The choice depends on sound: “an honest answer,” but “a useful suggestion.” Use the when the reference is identified: “I borrowed a book. The book explains eclipses.” Do not insert an article automatically before every abstract or plural noun: “Honesty matters”; “Books are useful.”
Use “many” and “few” with countable plurals, “much” and “little” with uncountable nouns. “A few notebooks remain” means some remain; “few notebooks remain” stresses scarcity. Likewise, “a little water” means some water, while “little water” suggests insufficient water. Incorrect: “There are much chairs.” Correct: “There are many chairs.” For advice and information, use “a piece of advice” and “some information,” not “an advice” or “informations.”
6. Choose modals for intention and degree of certainty
A modal expresses ability, permission, possibility, advice, necessity or obligation. It is followed by the base verb: “She can swim,” not “She can swims.” “May I enter?” requests permission; “It may rain” expresses possibility. Context determines the meaning.
Meaning | Example | Distinction |
|---|---|---|
Ability | I can solve this. | Capacity to perform |
Advice | You should revise the diagram. | Recommended action |
Strong obligation | Visitors must wear badges. | Requirement |
No obligation | You need not bring paper. | Bringing paper is unnecessary |
Prohibition | You must not enter this room. | Entry is forbidden |
Logical deduction | The lights are on; someone must be inside. | Strong inference, not a command |
“Need not” and “must not” are not interchangeable. Incorrect: “You must not submit a photograph; it is optional.” Correct: “You need not submit a photograph; it is optional.” The first wording would forbid what the second permits.
7. Report statements without mechanically changing every word
Reported speech conveys another person's message. Direct: Anika said, “I am tired.” Reported: Anika said that she was tired. With a past reporting verb, a backshift is often appropriate: present becomes past, present perfect becomes past perfect, and “will” becomes “would.” Change pronouns according to who speaks to whom.
Direct: Dev said to Rohan, “I will return your book tomorrow.” Reported later: Dev told Rohan that he would return his book the next day. “Told” needs an object; “said” does not take a direct person-object without “to.” Incorrect: “Dev said Rohan that…” Correct: “Dev told Rohan that…” A continuing universal truth can remain present: “The teacher said that water expands on freezing.” Time and place words change only when the reporting context requires it; do not change “here” if the speaker and reporter are still in the same place.
8. Report questions, requests and commands
For a yes/no question, use “if” or “whether” and statement word order. Direct: The coach asked me, “Are you ready?” Reported: “The coach asked me whether I was ready.” Incorrect: “asked me whether was I ready.” Do not keep the question mark inside a reported statement.
For a wh-question, retain the question word: “Where do you live?” becomes “She asked me where I lived.” Remove auxiliary “do” when it only forms the direct question. A request or command generally uses an object plus an infinitive: “Please close the window” becomes “She requested me to close the window”; “Do not touch the wire” becomes “He warned us not to touch the wire.” Choose a reporting verb that preserves intention: a warning is not simply an invitation.
9. Build accurate sentence connections and transformations
Use coordinating conjunctions for equal clauses: “The road was flooded, so we waited.” Use subordinating conjunctions to make the relationship explicit: “We waited because the road was flooded.” Avoid double linking: incorrect “Although it rained, but we played”; correct “Although it rained, we played.” Relative clauses add information: “The pupil who found the wallet returned it.” “Who” refers to people; “which” commonly refers to things.
In a passive construction, the object becomes the subject and the verb uses the appropriate form of “be” plus the past participle. “The club repaired the chairs” becomes “The chairs were repaired by the club.” Preserve tense and number. This broader sentence-craft skill supports editing, but follow your teacher's prescribed grammar list for assessed transformations rather than assuming every possible construction is compulsory.
10. Edit meaning as well as form
Check one category at a time: subject–verb agreement, tense, determiners, pronouns, prepositions, word order and punctuation. Correct only what the question requires. “She discussed about the problem” becomes “She discussed the problem”: “discuss” takes a direct object. “Between you and I” becomes “between you and me” because a preposition takes the object form.
Avoid comma splices, where a comma incorrectly joins independent sentences: “The gate was locked, we waited.” Write “The gate was locked, so we waited” or use a full stop. An apostrophe marks possession or missing letters: “the pupil's bag” belongs to one pupil; “the pupils' bags” belongs to several. “Its cover” shows possession; “it's damaged” means “it is damaged.” Read the corrected sentence again to ensure that you preserved the original meaning.
A reliable approach to questions
Read the complete context before considering the blank or error.
Identify the subject head, time frame and intended relationship between ideas.
Choose the rule governing that particular decision rather than matching familiar wording.
In reported speech, map speaker, listener, pronouns, tense and sentence type.
Substitute the proposed correction and read the full sentence for grammar and meaning.
Make only the required correction and retain punctuation appropriate to the sentence type.
Connections that matter
Functional writing relies on agreement, politeness, modals and precise reference.
Reading comprehension depends on understanding time relationships and pronoun references.
Creative writing uses clauses and varied sentence lengths to control emphasis and pace.
Common mistakes
Agreeing the verb with the nearest noun; locate the subject head before choosing the verb.
Treating “must not” as optionality; it expresses prohibition, while “need not” expresses no obligation.
Retaining question order after “asked whether”; use statement order in reported questions.
Backshifting universal truths automatically; preserve a present form when the truth still applies.
Revision checklist
I can identify subject heads and distinguish phrases from clauses.
I can choose verb forms that fit time, aspect and agreement.
I can use articles, quantity words and modals accurately.
I can report statements, questions and commands with correct word order.
I can combine and edit sentences without altering their meaning.