conditions [of] 5 billion years ago?

raymondaliasapollyon

Senior Member
Chinese
Hi,

Is it natural to use "of" in the following sentence?

Geologists agree that conditions [of] 5 billion years ago were unfit for human habitation.

I'd appreciate your help.
 
  • PaulQ

    Banned
    UK
    English - England
    Geologists agree that conditions [of] 5 billion years ago were unfit for human habitation. :tick:
    Geologists agree that the conditions of 5 billion years ago were unfit for human habitation. :tick:
     

    dojibear

    Senior Member
    English - Northeast US
    I agree. No "of".

    Geologists agree that conditions (that existed) 5 billion years ago were unfit for human habitation.
     
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