Page 175 - Grammar for Great Writing B
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ACTIVITY 5 Common Error 12.2
Fill in the blanks with the correct passive forms of the verbs in parentheses.
1. Some genetic diseases (simple present: carry) from one
generation to the next, while others skip a generation.
2. In solar cells, sunlight (simple present: transform) into
electricity.
3. The migration of the monarch butterfly is so difficult and dangerous that many butterflies
(modal: can / lose) during each stage.
4. Parts of the Great Wall of China (present progressive: destroy)
gradually by sandstorms, and (modal: may / go) in under
20 years.
5. Studies show that original ideas (simple present: form)
in more than one part of the brain at the same time.
6. Hippocrates (simple present: know) as the father of modern
medicine because he was the first doctor to use science instead of magic to heal people.
7. Velcro (simple past: not / invent) deliberately but rather by
accident when a Swiss scientist noticed the structure of the burrs sticking to his clothes.
8. Some psychologists think that the millennial generation
(present perfect: give) too much praise over the years.
Common Error 12.3 Do you need passive or active voice?
were
The students recognized for their excellent work.
^
worked
They are worked at the laboratory until late at night.
REMEMBER: • Use the active voice if the subject of the sentence is doing the action. Use the passive
voice if the subject is receiving the action.
• Intransitive verbs do not have objects. Therefore, they cannot be used in the passive
voice.
Common Errors 165
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