This is allowed. Is the verb is a linking verb, or is this passive construction? Is there a difference? How does one tell?
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 ...
I was just copyediting somebody's answer on another SE site and my native English speaker Sprachgefühl told me I had to correct the grammar of one sentence: ... 5–6 weeks are a lot of time ... ...
Possible Duplicate: Is "is" an auxiliary verb? My Mum's bag is blue. Is is an auxillary verb in that sentence? If not, what part of speech is it?
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: ...