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Grammar

10 Grammar Mistakes SPM Students Make (And How to Fix Them)

The most common grammar errors in SPM English essays — with corrections and examples. Fix these and watch your marks improve.

By Teacher Daletha · 7 min read · 20 Feb 2025
8 Years Teaching
2,000+ Students
83% Improve 2+ Grades
SPM English Specialist

These 10 Mistakes Cost You 5-10 Marks Every Paper

After marking thousands of SPM English essays, I see the same grammar mistakes again and again. Fix these 10 and you’ll gain 5-10 marks immediately — no exaggeration.

1. Subject-Verb Agreement

Wrong: “The students in the class is studying hard.” Right: “The students in the class are studying hard.”

The subject is “students” (plural), not “class.” Don’t let the words in between confuse you.

Quick rule: Cover the prepositional phrase. “The students… are studying.” Now it’s obvious.

2. Tense Consistency

Wrong: “She walks to school and talked to her friend.” Right: “She walked to school and talked to her friend.”

Pick a tense and stick with it. Narrative essays should be in past tense. Don’t switch to present tense mid-paragraph.

3. Run-On Sentences

Wrong: “I went to the shop I bought some food I went home.” Right: “I went to the shop and bought some food. Then, I went home.”

Use periods, commas, and conjunctions. A sentence should express one complete thought.

4. Misusing “Their,” “There,” and “They’re”

  • Their = belonging to them (“their books”)
  • There = a place (“over there”)
  • They’re = they are (“they’re studying”)

This mistake screams “careless” to examiners. Double-check every time you use one of these.

5. Wrong Preposition Usage

Wrong: “I am interested on learning English.” Right: “I am interested in learning English.”

Common preposition errors:

  • Interested in (not on)
  • Depend on (not from)
  • Consist of (not with)
  • Good at (not in)

These need to be memorised — there’s no shortcut.

6. Missing Articles (a, an, the)

Wrong: “I saw cat on road.” Right: “I saw a cat on the road.”

Malaysian students often drop articles because Malay and Chinese don’t use them. In English, countable nouns need articles.

Rule of thumb:

  • First mention → “a” or “an”
  • Already mentioned or specific → “the”

7. Double Negatives

Wrong: “I don’t know nothing about it.” Right: “I don’t know anything about it.”

In English, two negatives make a positive. “I don’t know nothing” technically means “I know something.”

8. Dangling Modifiers

Wrong: “Walking to school, the rain started.” Right: “Walking to school, I got caught in the rain.”

The modifier “walking to school” needs a person doing the walking. Rain doesn’t walk.

9. Comma Splices

Wrong: “She studied hard, she passed the exam.” Right: “She studied hard, so she passed the exam.” OR “She studied hard. She passed the exam.”

Two complete sentences can’t be joined by just a comma. Use a conjunction (and, but, so, yet) or a period.

10. Confusion Between “Affect” and “Effect”

  • Affect = verb (“The weather affects my mood.”)
  • Effect = noun (“The effect of the weather on my mood.”)

Memory trick: Affect = Action (both start with A). Effect = End result (both start with E).

How to Actually Fix These Mistakes

Reading this list isn’t enough. You need to:

  1. Write a practice essay (any topic)
  2. Check specifically for these 10 errors after writing
  3. Get someone to mark it who knows SPM marking criteria

The students who improve fastest are the ones who get specific feedback: “Line 3, you used ‘is’ but the subject is plural.” That’s the kind of correction that sticks.


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Teacher Daletha
8 years teaching SPM English · 2,000+ students tutored · 83% of students improve by 2+ grades · Bilingual teaching (English & Mandarin) · SPM English subject matter specialist

Teacher Daletha founded SPMEnglish.com.my to help Malaysian students — especially those from Chinese-medium and Malay-medium backgrounds — score higher in their SPM English exam. She breaks down complex English concepts into clear, practical steps using both English and Mandarin, so students actually understand before they apply.

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