I think I was taught that the second would be correct, because when you turn the sentence around you get "Cars that run on diesel are a good example", but now I have my doubts.
Thanks
Top answer
Don't turn the sentence around. The subject ('example') is singular, so the verb is singular ('is'). This is the correct grammar.
— Mister Micawber
Don't turn the sentence around.
The subject ('example') is singular, so the verb is singular ('is').
This is the correct grammar.
If the notional discord bothers you (as it does me), then recast the sentence: A good example is a car that runs on diesel A good example is cars running on diesel Good examples are cars that run on diesel
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