Common Mistakes
The effect of radiation that released will impact all life for decades.
The effect of radiation that is released will impact all life for decades.
The verb ‘to be’ is missing in the passive structure.
They said we have triggered the sixth mass extinction event. (use impersonal passive)
It was said that we have triggered the sixth mass extinction event. (impersonal passive)
OR
We were said to have triggered the sixth mass extinction event.
Once the balance between an ecosystem’s elements are broken, it goes through a catastrophic transformation.
Once the balance between an ecosystem’s elements is broken, it goes through a catastrophic transformation.
The verb ‘to be’ has to agree with the subject of the sentence. In this case, ‘the balance between an ecosystem’s elements’ is the subject and it needs a singular verb.
We can determine the most probable causes of mass extinctions by analysing fossils.
The most probable causes of mass extinctions can be determined by analysing fossils.
A pandemic would have to travel all continents in a very short time to make it a global risk that cannot is contained.
A pandemic would have to travel all continents in a very short time to make it a global risk that cannot is be contained.
The verb ‘to be’ appears as ‘be’ after a modal verb in passive structures.
Today Hiroshima is considered safe in terms of radiation by its residents.
Today its residents consider Hiroshima safe in terms of radiation.
These scientists were arrived from 184 different countries.
These scientists were arrived from 184 different countries.
This sentence should be written in the active voice. Intransitive verbs such as arrive, occur, come, live cannot be used in the passive form.
New technologies have brought about medical breakthroughs.
Medical breakthroughs have been brought about by new technologies.
The settlers cut down, burned and completely destroyed 16 million trees on Easter Island. (Sentence Transformation)
16 million trees on Easter Island were cut down, burned and completely destroyed by the settlers.
It says that the first mass extinction killed about 86% of all species on Earth.
It says is said that the first mass extinction killed about 86% of all species on Earth.
This is an impersonal passive structure, with the passive construction missing.
An asteroid that hit the Earth 66 million years ago might have wiped out dinosaurs from the face of the earth.
Dinosaurs might have been wiped out from the face of the earth by an asteroid that hit the Earth 66 million years ago.
The most likely causes of mass extinctions can be narrow down to volcano eruptions, asteroid collisions, and sea level falls. (Common Mistakes)
The most likely causes of mass extinctions can be narrowed down to volcano eruptions, asteroid collisions, and sea level falls.
The past participle form of the main verb is used after the verb ‘to be’ in passive structures.