Key grammar points that lose most exam points
Key grammar points that cause most exam point losses are:
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Subject-verb agreement errors, where verbs do not match their subjects in number (singular/plural). 1, 2, 3 This mistake often arises when the subject is separated from the verb by additional phrases, or when collective nouns are involved. For example, in the sentence “The list of items are on the table,” the correct verb is “is” because “list” is singular.
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Inconsistent verb tenses within sentences or paragraphs. 2, 1 Switching between past, present, and future tenses without clear reason confuses readers and marks down coherence. For example, writing “She walks to school and talked to a friend” mixes present and past improperly.
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Misuse and omission of articles (“a,” “an,” “the”). 4, 1, 2 Articles are a subtle but essential part of English grammar. Non-native speakers frequently confuse when to use definite versus indefinite articles or omit them altogether in phrases like “I have dog” instead of “I have a dog.”
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Misplaced modifiers that cause confusion about what is being described. 3, 2 A misplaced modifier results in unclear sentences, such as “She served sandwiches to the children on paper plates” — it sounds like the children are on paper plates, not the sandwiches. Correct placement improves clarity: “She served the children sandwiches on paper plates.”
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Run-on sentences due to lack of correct punctuation or conjunctions. 2, 3, 4 This common fault comes from connecting independent clauses without proper punctuation, e.g., “I went to the store I bought milk” should be split or linked with punctuation: “I went to the store, and I bought milk.”
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Pronoun errors, especially unclear or ambiguous antecedents. 5 Pronouns must clearly refer to a specific noun to avoid confusion. For instance, in “John told Peter that he was late,” it is unclear who “he” refers to. Clarity requires restructuring or repeating the noun.
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Confusing adjectives and adverbs, and using the wrong form. 6, 3 A frequent error is using an adjective where an adverb is needed, such as “She runs quick” instead of “She runs quickly.”
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Errors with prepositions and prepositional phrases. 3, 2 Prepositions have nuanced usage that varies by language, causing mistakes like “different than” instead of “different from,” or incorrect collocations like “interested on” instead of “interested in.”
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Incorrect use of possessive apostrophes. 3 Apostrophes indicate possession or contractions but are often misplaced in plurals or possessive forms, such as “the cats toy” instead of “the cat’s toy,” or “its” versus “it’s.”
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Sentence fragments lacking subjects or verbs. 4 Fragments can result in incomplete thoughts that lose points for coherence, e.g., “Because I was tired.” without a main clause.
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Common homophone confusions (e.g., their/they’re/there). 3 These sound-alike words cause frequent mistakes in writing despite correct pronunciation. For example, “Their going to the park” instead of “They’re going to the park.”
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Mistakes in conditional sentences and passive voice. 1 Errors include incorrect verb forms in conditionals (“If I will go” instead of “If I go”) or misformed passive constructions (“The cake was ate” instead of “The cake was eaten”).
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Overly long, complex sentences without clear structure. 1 Writing excessively long sentences without clear breaks or connectors causes readability issues and grammatical mistakes. Clear, concise sentences score better.
Why These Errors Matter in Exams
Examiners of tests like the IELTS, PTE, SAT, and ACT focus heavily on grammatical accuracy and coherence when allocating writing scores. For example, the IELTS Writing band descriptors explicitly mention grammatical range and accuracy as key criteria, with repeated errors in these areas leading to substantial point deductions. Research into test-taker errors shows these common grammar faults appear in over 50% of papers with low grammar scores, reflecting the universal challenge of mastering these points.
Practical Examples: Improvement through Correction
- Original: “She do not likes pizza.”
- Corrected: “She does not like pizza.”
This correction addresses subject-verb agreement and verb form errors simultaneously.
- Original: “I have been living here since five years.”
- Corrected: “I have been living here for five years.”
This fixes preposition misuse.
- Original: “Who’s car is this?”
- Corrected: “Whose car is this?”
An example of correct possessive pronoun use versus contraction confusion.
Common Pitfalls and How They Happen
Many of these errors stem from interference by a learner’s native language habits. For example, subject-verb agreement errors occur frequently among speakers of languages with less rigid verb agreement rules compared to English. Similarly, article mistakes are common among speakers of languages that lack articles entirely.
Overuse of run-on sentences often results from thinking in one’s native syntax, where conjunctions or punctuation requirements differ. Pronoun ambiguity can also arise from differing structures in other languages where pronouns drop or function differently.
Importance of Active Practice
Beyond passive study or rote memorization, these grammar points improve significantly with active usage — practicing writing and speaking in real or simulated conversational contexts. For instance, conversational AI tutors can prompt immediate correction and help develop automaticity in choosing correct forms, leading to fewer careless mistakes during exams.
Summary
Mastering the above grammar points is critical because each mistake type independently causes frequent exam point losses. Clear understanding, concrete example drills, and meaningful practice that involves active recall and correction can substantially improve accuracy. For learners preparing for English proficiency exams, focusing study time on these specific grammar issues can yield measurable score improvements.