Chapter 2 · English Grammar

Gap Filling, Editing & Transformation

Advanced ⏱ 45–55 minutes 🎓 Grade 10

What you will be able to do

  • Solve gap-filling items (verbs, articles, prepositions, modals)
  • Do editing tasks: one error per line, with corrections
  • Complete omission exercises (missing words)
  • Transform sentences as directed (voice, narration, 'begin with…')
  • Apply the standard CBSE answer format
Builds on / Related chapters
Grade 8 · Transformation of Sentences Grade 9 · Editing & Error Correction Grade 9 · Gap Filling & Cloze Tests

1 Quick Introduction

English

Three question types appear in every CBSE grammar section: gap filling, editing, and transformation/rewriting. They are the highest-scoring, most predictable marks in the paper — if you know the format. This chapter drills all three so you answer them fast and correctly under time pressure.

हिन्दी

हर CBSE grammar खंड में तीन प्रकार के प्रश्न आते हैं: gap filling, editing, और transformation/rewriting। यदि format आता है तो ये पेपर के सबसे अधिक अंक देने वाले, सबसे पूर्वानुमेय प्रश्न हैं। यह अध्याय तीनों का अभ्यास कराता है ताकि आप समय-दबाव में तेज़ी और शुद्धता से उत्तर दें।

2 A Real-Life Situation

Imagine this

A typical editing line and its answer format:

Line: Many student fails because they not revise.

Answer: student → students; not → do not (or 'don't')

Why this form? Editing rewards precision in a fixed format — write the wrong word and the correction. Knowing that format, and scanning for one error per line, turns these into guaranteed marks.

3 The Grammar Rule

Rule & Formula
TypeWhat to do
Gap fillingsupply the right word (verb/article/prep/modal)
Editingone error per line → write incorrect + correct
Omissiona word is missing → supply it with the words around it
Transformationrewrite as directed, keeping the meaning
Read the instruction → identify the grammar point → answer in the exact format
Edit: 'He go to school' → go → goes.

4 Gap Filling & Editing

Gap filling usually tests verbs (tense/form), articles, prepositions, conjunctions, determiners and modals. Use the words on both sides of the blank as clues, and keep the passage consistent.

Editing (one error per line): the standard CBSE format gives a passage where each line has exactly one mistake. You write the incorrect word and the correct word, like this:

IncorrectCorrect
gogoes
aan

Omission tasks mark a missing word with a caret; you supply the missing word and the words on either side.

Visual — Gap Filling & Editing
EDITING: one error per lineHe go to school.→go → goes
1
Worked Example
Gap fill: She is good ___ painting and has ___ natural talent.
Solution

at … a — 'good at'; 'a natural talent'.

2
Worked Example
Edit (write incorrect → correct): He don't likes coffee.
Solution

don't → doesn't (and likes → like): 'He doesn't like coffee.'

Key Points

  • Gap filling tests verbs, articles, prepositions, determiners, modals
  • Editing = one error per line; write incorrect + correct word
  • Omission = supply the missing word with its neighbours

5 Transformation / Rewriting (CBSE Format)

Transformation asks you to rewrite a sentence as directed, keeping the meaning. Common directions:

  • Combine two sentences: He was tired. He kept working. → Though he was tired, he kept working.
  • Change the voice: She wrote a letter. → A letter was written by her.
  • Change the narration: He said, "I am busy." → He said that he was busy.
  • Begin with a given word: 'Rewrite beginning with "No sooner…"' or 'Begin with "Hardly…"'.
  • Rewrite using a given word (e.g. 'too', 'so', 'unless').

Always read the instruction carefully — the marks are for following the exact direction while preserving the meaning.

1
Worked Example
Rewrite using 'too…to': He is so weak that he cannot walk.
Solution

He is too weak to walk.

2
Worked Example
Begin with 'No sooner': As soon as he arrived, it started to rain.
Solution

No sooner had he arrived than it started to rain.

Key Points

  • Directions: combine, change voice, change narration, begin with…, use a word
  • Keep the meaning; follow the exact instruction
  • 'No sooner … than', 'Hardly … when' need inversion

6 Vocabulary Builder

WordMeaningहिन्दी
Gap fillingsupplying a missing wordरिक्त-स्थान पूर्ति
Editingfinding & fixing errorsसंपादन
Omissiona missing wordलोप
Transformationrewriting in another formरूपांतरण
Directedas instructedनिर्देशानुसार
✎ Vocabulary Quick Test0 / 1
Q.In CBSE editing, for each line you write:
Explanation: The standard format requires the incorrect word and its correction.

7 Common Mistakes to Avoid

✗ IncorrectHe don't likes it.
✓ CorrectHe doesn't like it.
Editing: 'don't' → 'doesn't', 'likes' → 'like'.
✗ IncorrectShe is good in maths.
✓ CorrectShe is good at maths.
Gap fill: correct preposition 'at'.
✗ IncorrectHe is too weak that he cannot walk.
✓ CorrectHe is so weak that he cannot walk.
With 'that', use 'so', not 'too'.
✗ IncorrectNo sooner he arrived than it rained.
✓ CorrectNo sooner had he arrived than it rained.
'No sooner' needs inversion.

8 Practice Exercises

Fill in the BlanksLevel 1
Fill in the correct word.
  1. She ______ (go) to school every day.
  2. It is ______ honest answer.
  3. He is afraid ______ dogs.
  4. You ______ wear a helmet. (obligation)
  5. There isn't ______ sugar left.
Answer Key
  1. goes
  2. an
  3. of
  4. must
  5. any
Fill in the BlanksLevel 2
Edit — write the correction for the underlined error.
  1. Many student fails the test. (student)
  2. She have finished her work. (have)
  3. He is more taller than me. (more taller)
  4. We discussed about the issue. (about)
  5. I am living here since 2015. (am living)
Answer Key
  1. students
  2. has
  3. taller
  4. (remove 'about')
  5. have been living
Error Detection
  1. He don't know the answer.
  2. She is the most cleverest girl.
  3. Each of the boys have a bag.
  4. He has went home.
Answer Key
  1. He doesn't know the answer. (error: don't)
  2. She is the cleverest girl. (error: most cleverest)
  3. Each of the boys has a bag. (error: have)
  4. He has gone home. (error: went)
Sentence Correction
  1. Rewrite using 'so…that': He is too tired to walk.
  2. Change the voice: She is writing a letter.
  3. Change the narration: He said, 'I will come.'
Answer Key
  1. He is so tired that he cannot walk.
  2. A letter is being written by her.
  3. He said that he would come.
Rearrange the Words
  1. to / weak / he / walk / is / too
  2. was / by / the / letter / her / written
  3. that / busy / said / he / he / was
Answer Key
  1. He is too weak to walk.
  2. The letter was written by her.
  3. He said that he was busy.
Match the Following
Column AColumn B
1. Gap fillinga. rewrite as directed
2. Editingb. supply a missing word
3. Omissionc. supply the right word
4. Transformationd. one error per line
Answer Key
Gap filling → supply the right wordEditing → one error per lineOmission → supply a missing wordTransformation → rewrite as directed

9 Micro Quiz

✎ Quick Check — 5 questions0 / 5
Q1.Edit: 'He go to school daily.'
Explanation: Third-person singular → 'goes'.
Q2.Gap fill: 'She is interested ___ science.'
Explanation: 'interested in'.
Q3.Transform (so…that): 'He is too short to reach.'
Explanation: 'too…to' → 'so…that…cannot'.
Q4.Edit: 'I have went there.'
Explanation: Present perfect uses 'gone'.
Q5.Begin with 'No sooner': 'As soon as I slept, the phone rang.'
Explanation: 'No sooner had I slept than …' (inversion).

10 Reading Practice

Editing task (one error per line, with corrections shown):

L1: Every morning my brother go for a walk. (go → goes)
L2: He believe that exercise keep him fit. (believe → believes)
L3: Yesterday he buyed new running shoes. (buyed → bought)
L4: He is more fitter than all his friends. (more fitter → fitter)

Comprehension Questions
  1. What grammar point does Line 1 test?
  2. What kind of error is 'buyed'?
  3. Why is 'more fitter' wrong?
Answer Key
  1. Subject-verb agreement — 'my brother goes' (third-person singular).
  2. A word-form error — the past of 'buy' is irregular: 'bought'.
  3. It is a double comparative; 'fitter' alone is correct.

11 Speaking, Writing & Daily Use

Say these aloud
  • He goes to school by bus every day.
  • She has finished all her assignments.
  • We discussed the plan in detail.
  • No sooner had he left than it rained.
  • A new bridge has been built over the river.
Write five short lines, each with one deliberate grammar error, then write the corrections beside them — like a CBSE editing exercise.
Example: Line: She don't like tea. (don't → doesn't)

12 Challenge Zone

🔥 Higher-Level Questions — 30 / 3
Q1.Transform using 'unless': 'If you do not hurry, you will miss the bus.'
Explanation: 'unless' = 'if not'; don't add another negative.
Q2.Change the voice: 'Someone has stolen my bike.'
Explanation: Present perfect passive = has been + V3 (agent dropped).
Q3.Edit two errors: 'The childrens was playing in the park.'
Explanation: 'children' (plural) + 'were'.

13 Chapter Mind Map

Mind Map
  GAP / EDITING / TRANSFORMATION
                |
   +--------+---+----+---------+
   |        |        |         |
 GAP FILL  EDITING  OMISSION  TRANSFORM
 verb/art/ one error supply    combine
 prep/det/ per line  missing   voice
 modal     incorr>   word      narration
           correct             begin with

14 One-Minute Revision

Remember these

  • Gap filling: supply the right verb/article/preposition/modal (use both-side clues)
  • Editing: one error per line → write incorrect + correct word
  • Omission: supply the missing word with its neighbours
  • Transformation: rewrite as directed, keeping the meaning
  • 'No sooner … than', 'Hardly … when' need inversion