How to Use the Passive Voice in B2 First Use of English Part 4
To use the passive voice in B2 First Use of English Part 4, identify the grammatical tense of the active sentence, maintain that exact same tense using the verb *to be* plus a past participle, and write strictly between 2 and 5 words, including the unmodified keyword.
Key Takeaways
- Match the timeline: The passive tense must mathematically equal the active tense.
- Strict word count: Cambridge requires between 2 and 5 words. Contractions count as two words.
- Untouched keyword: Never conjugate or modify the provided capitalized keyword.
The Pain of Part 4: Why Students Fail Here
Use of English Part 4 (Key Word Transformation) is statistically the hardest section of the B2 First exam. You can understand the grammar perfectly in class, but under exam pressure, you write 6 words instead of 5, or change a Present Perfect to a Past Simple.
A single tense mistake destroys your score instantly. Traditional academies make this worse. You practice on static PDFs, hand them to a teacher, and wait a week to get a red cross with zero explanation. You cannot fix what you do not instantly understand.
Core Rules for Passive Voice Transformations
The passive voice appears in almost every official Cambridge English exam. Apply this exact architecture to secure maximum points.
1. Match the Tense Exactly
The most common fatal error is shifting the chronological time. If the active sentence is in the past, the passive transformation must also be in the past.
| Active Tense | Active Example | Passive Structure | Passive Example |
|---|---|---|---|
| Present Simple | They clean the room. | am / is / are + Participle | The room is cleaned. |
| Past Simple | They cleaned the room. | was / were + Participle | The room was cleaned. |
| Present Perfect | They have cleaned it. | have / has been + Participle | It has been cleaned. |
| Future (Will) | They will clean it. | will be + Participle | It will be cleaned. |
2. Handle Modal Verbs Correctly
When dealing with modals (must, should, can, might), the formula is rigid: Modal + be + Past Participle. If the prompt says "You must finish it", the correct transformation is "It must be finished".
Pro-Tip: Omit the agent ("by someone") unless it adds essential meaning. Adding unnecessary agents will easily push your answer over the 5-word limit, resulting in a score of zero.
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Create free accountOfficial B2 First Examples (Passive Voice)
Here is how these structures appear in a real exam scenario. Pay close attention to the word count and the keyword integration.
Example 1: The Present Perfect Trap
- Original: Someone has stolen my bicycle!
- Keyword: BEEN
- Correct Answer: My bicycle HAS BEEN STOLEN!
- Alfie's Breakdown: Present Perfect active becomes Present Perfect passive (has + been + participle). Exactly 3 words.
Example 2: The Modal Passive
- Original: They will announce the exam results tomorrow.
- Keyword: BE
- Correct Answer: The exam results WILL BE ANNOUNCED tomorrow.
- Alfie's Breakdown: Future modal requires will + be + participle. Exactly 3 words.
Example 3: Double Object Sentences
- Original: They gave Mary a warning.
- Keyword: WAS
- Correct Answer: Mary WAS GIVEN A warning.
- Alfie's Breakdown: Past simple passive. The indirect object becomes the new subject. Exactly 4 words.
Practice passive voice
Do the next exercise to test your level and your ability to use passive voice correctly
Stop Guessing Your Cambridge Score
Memorizing grammar rules is only the first step. The real secret to passing the B2 First is high-volume, instant-feedback repetition.
Paying 120€ a month to sit in a crowded classroom and wait days for a manual correction won't make you faster. You need surgical practice. You need to know instantly if your 4-word answer complies with Cambridge's official rubric.
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