Introduction — what this topic is and why it matters
Transformation of a sentence means changing the grammatical form of a sentence without changing its meaning. The idea (the "sense") stays exactly the same; only the structure changes.
For example:
- He is too weak to walk. → He is so weak that he cannot walk.
Both sentences mean the same thing — only the pattern (Simple ↔ Complex) is different.
In Bangladeshi competitive exams — BCS (Preliminary and Written), Bank (Senior Officer / Officer), PSC non-cadre, and IT-officer posts — Transformation is one of the most repeated grammar items. Examiners love it because a single sentence can test many rules at once: sentence structure, degrees of comparison, positive/negative logic, and voice. If you master the fixed rule-patterns, these questions become almost mechanical marks.
This lesson teaches every high-frequency transformation type from first principles, with rule tables and more than 20 fully worked transformations.
Learning objectives
By the end of this lesson you will be able to:
- Identify the three sentence structures (Simple, Complex, Compound) and interchange them correctly.
- Convert Affirmative ↔ Negative using fixed word-pairs (only → none but, must → cannot but, etc.).
- Change an Assertive sentence into Interrogative, Exclamatory, and Imperative forms and back.
- Change the Degree of an adjective/adverb (Positive ↔ Comparative ↔ Superlative) keeping the meaning fixed.
- Recall the recap link to Active↔Passive and Direct↔Indirect transformation.
- Avoid the common traps that examiners deliberately set.