I came across the sentence My biggest grievance is grammar mistakes. I'd be inclined to write it as My biggest grievance is with grammar mistakes. or Grammar mistakes are my biggest ...
John is working now. Is the verb 'is' in this example an auxiliary verb?
I was just trying to formulate a sentence in an email, and wanted to reference a third person, inquiring as to which of something that person was referring in the forwarded mail message. Is it: ...