Exercise: Passive Sentences
Directions
(1) Look at the sentences and identify the active and the passive verbs.(2) Try to change the active verbs to passive and passive verbs to active where it makes sense to do so. Sometimes you'll have to change the sentences around a bit.
(3) Then click "Check Answer" to see if what you've written is correct. The answers given are NOT the only possible ones. If you have any doubt, ask your teacher.
1. Scientists at Oregon Health Sciences University inserted a harmless marker gene which they were then able to confirm the presence of expression through DNA screening.
2. So far, all gene therapy studies in humans done by the scientists at the university have been restricted to localized cellular targets in which the gene does not become part of the genome.
3. In New Zealand, an interesting collection of toxic chemicals isolated from poisonous toadstools appear to have potent tumor killing abilities, even against those resistant to standard chemotherapy. The anti-cancer compounds are called acylfulvenes.
4. Researchers were also encouraged by results of treatment of patients with advanced ovarian cancer who had shown no initial response to such drugs as platinum or paclitaxel.
5. As with many cancer therapies, the new drug produced some unpleasant side effects, including nausea, vomiting, fatigue, and bone marrow suppression.
6. Three neuroscientists will share this year's Nobel Prize for medicine for their pioneering studies of neurotransmitters.
7. A message from one nerve cell to another is transmitted with the help of different chemical transmitters.
8. Genome science will have a real impact on all our lives -- and even more, on the lives of our children.
9. The public group took credit for creating a 'working draft' of the genome, while Celera achieved the first complete assembly of the genome.
10. The Harvard research complements similar work being done by a group at the University of California, San Diego led by Dr. Charles Zuker. Working on a parallel track, Zuker's lab also identified genes that encode proteins that function as bitter taste receptors.
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Updated: 24.11.05