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Grammar in Context
Error Spotting & Editing
Class 9–12 | Both Levels | Notes, Rules & Practice
Tense Errors • Subject-Verb Agreement • Articles • Prepositions
Pronoun Errors • Modifiers • Editing Passages • 100+ Exercises
Every grammar error type explained with wrong/correct examples and
exercises
© Study Notes | Class 9–12 English Series
, Table of Contents
Tense Errors
1
Wrong tense usage and how to fix them
Subject-Verb Agreement
2
Making subjects and verbs match in number
Article Errors
3
A, An, The — the most common mistakes
Preposition Errors
4
Wrong preposition choices corrected
Pronoun Errors
5
Case, reference, and agreement mistakes
Modifier Errors
6
Dangling and misplaced modifiers
Word Choice & Spelling Errors
7
Commonly confused and misspelled words
Editing Passages
8
Full passage editing exercises with answers
, CHAPTER 1
Tense Errors
The most tested grammar category in board exams
Tense errors occur when the wrong form of a verb is used for the time or context.
These are the most common errors in Class 9–12 editing tasks.
1.1 Common Tense Error Types
Error Type Wrong Correct Rule
Wrong tense for She go to school She went to school Use past simple for
past yesterday. yesterday. completed past
actions.
Present instead I already eat my lunch. I have already eaten my Use present perfect
of present perfect lunch. with 'already', 'just',
'yet', 'ever'.
Tense He opened the door and He opened the door and Keep tense
inconsistency runs away. ran away. consistent throughout
a
sentence/paragraph.
Future without She come tomorrow. She will come tomorrow. Use will/shall for
'will' future actions.
Wrong perfect She has went to the She has gone to the After has/have/had,
form market. market. use the past
participle, not past
simple.
Present She is going to school She goes to school every Use present simple
continuous for every day. day. for habits and
habits routines.
✗ By the time he arrived, she leaves already.
✓ By the time he arrived, she had already left.
Grammar in Context
Error Spotting & Editing
Class 9–12 | Both Levels | Notes, Rules & Practice
Tense Errors • Subject-Verb Agreement • Articles • Prepositions
Pronoun Errors • Modifiers • Editing Passages • 100+ Exercises
Every grammar error type explained with wrong/correct examples and
exercises
© Study Notes | Class 9–12 English Series
, Table of Contents
Tense Errors
1
Wrong tense usage and how to fix them
Subject-Verb Agreement
2
Making subjects and verbs match in number
Article Errors
3
A, An, The — the most common mistakes
Preposition Errors
4
Wrong preposition choices corrected
Pronoun Errors
5
Case, reference, and agreement mistakes
Modifier Errors
6
Dangling and misplaced modifiers
Word Choice & Spelling Errors
7
Commonly confused and misspelled words
Editing Passages
8
Full passage editing exercises with answers
, CHAPTER 1
Tense Errors
The most tested grammar category in board exams
Tense errors occur when the wrong form of a verb is used for the time or context.
These are the most common errors in Class 9–12 editing tasks.
1.1 Common Tense Error Types
Error Type Wrong Correct Rule
Wrong tense for She go to school She went to school Use past simple for
past yesterday. yesterday. completed past
actions.
Present instead I already eat my lunch. I have already eaten my Use present perfect
of present perfect lunch. with 'already', 'just',
'yet', 'ever'.
Tense He opened the door and He opened the door and Keep tense
inconsistency runs away. ran away. consistent throughout
a
sentence/paragraph.
Future without She come tomorrow. She will come tomorrow. Use will/shall for
'will' future actions.
Wrong perfect She has went to the She has gone to the After has/have/had,
form market. market. use the past
participle, not past
simple.
Present She is going to school She goes to school every Use present simple
continuous for every day. day. for habits and
habits routines.
✗ By the time he arrived, she leaves already.
✓ By the time he arrived, she had already left.
