Passive voice (consider revising)

[sebasttian]

Dear Madame and Sir
Every day I read scientific papers abstracts in English language. In order to improve my English writing I copy the text in a Word processor. However, all the time for the above underlined words, the following message is displayed: “Passive voice (consider revising)”. How can I know if I am writing correctly? Many thanks for your help.
The discovery was made quite by accident
The above data is based on official...
However, it is not known whether
Even more importantly, crows spontaneously display relational responding without ever having been trained on RMTS
Crows have long been heralded for their high intelligence
These relational matching trials were arranged in such a way
"Crows Spontaneously Exhibit Analogical Reasoning," was written by
The experiment will be repeated

Many thanks for your help.

 

[BobK]

...I copy the text in a Word processor. However, all the time for the above underlined words, the following message is displayed: “Passive voice (consider revising)”. How can I know if I am writing correctly? ...

Well, the short answer is 'NOT by regarding Word as omniscient'

b

 

[sebasttian]

Thank you. I still doubt if sentences are correctly written? I really appreciate your help.

 

[Barb_D]

Scientific papers use the passive. They are usually grammatically correct.

Do not use scientific papers as your model for general writing.