..., 36 % of the world's population is still affected by poor hygiene.
...the world's population is so closely connected...
b) Present Perfect Passive Voice [have/has been + ]
Infection and disease haven't been eliminated entirely in our hospitals yet, but they have been significantly reduced.
c) Past Continuous Passive Voice [was/were being + ]
Before then, up to half of Lister's patients who had survived surgery were being killed by infections spread by germs.
d) Future Simple Passive Voice [will be + ]
Furthermore, medical organisations will be challenged in the future...
...that potentially catastrophic epidemics will be transmitted around the globe in days.
e) Present Continuous Passive Voice [am/are/is being + ]
Although hygiene in developing countries is being improved all the time...
f) Past Simple Passive Voice [was/were + ]
Louis Pasteur and Joseph Lister's revolutionary ideas about using sterile instruments in clean hospitals were adopted in the 19th century.
g) Past Perfect Passive Voice [had been + ]
The ancient Greeks and Egyptians enjoyed relatively high standarts of personal hygiene - they had been taught about the importance of cleanliness by their religious leaders.
Before then, up to half of Lister's patients who had survived surgery were being killed by infections spread by germs.
a) Present Simple Passive Voice (is +
)
..., 36 % of the world's population is still affected by poor hygiene.
...the world's population is so closely connected...
b) Present Perfect Passive Voice [have/has been +
]
Infection and disease haven't been eliminated entirely in our hospitals yet, but they have been significantly reduced.
c) Past Continuous Passive Voice [was/were being +
]
Before then, up to half of Lister's patients who had survived surgery were being killed by infections spread by germs.
d) Future Simple Passive Voice [will be +
]
Furthermore, medical organisations will be challenged in the future...
...that potentially catastrophic epidemics will be transmitted around the globe in days.
e) Present Continuous Passive Voice [am/are/is being +
]
Although hygiene in developing countries is being improved all the time...
f) Past Simple Passive Voice [was/were +
]
Louis Pasteur and Joseph Lister's revolutionary ideas about using sterile instruments in clean hospitals were adopted in the 19th century.
g) Past Perfect Passive Voice [had been +
]
The ancient Greeks and Egyptians enjoyed relatively high standarts of personal hygiene - they had been taught about the importance of cleanliness by their religious leaders.
Before then, up to half of Lister's patients who had survived surgery were being killed by infections spread by germs.