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Jigneshbharati Posted 8 years ago
Grammar

Has been shown to be

June 15
Iron Isomaltoside 1000 requested by Dr Burton, Consultant Nephrologist

Iron isomaltoside has been shown to be non-inferior to IV iron sucrose in an RCT. Adverse effects aresimilar and cost may be lower. Diafer® has a licence in anaemia in CKD, Monofer does not®

http://www.lmsg.nhs.uk/wp-content/uploads/2016/02/Iron_Isomaltoside-Renal_anaemia.pdf?UNLID=4223251582018522175245

Please explain the use "has been" and "to be" in the context

  

Top answer

The basic pattern is "show X to be Y". Yours is the passive present perfect version of this: someone has shown iron isomaltoside to be non-inferior ... -> iron isomaltoside has been shown to be non-inferior ...

  • The basic pattern is "show X to be Y".
  • Yours is the passive present perfect version of this: someone has shown iron isomaltoside to be non-inferior ...
  • -> iron isomaltoside has been shown to be non-inferior ...
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1 Answers
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The basic pattern is "show X to be Y". Yours is the passive present perfect version of this:

someone has shown iron isomaltoside to be non-inferior ... -> iron isomaltoside has been shown to be non-inferior ...

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