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Alibaba2626 Posted 15 years ago
Grammar

What are or what is

Hi all,

Which sentenses is correct?

a) what are the root cause?

b) what is the reason?

when we need use 'are' or 'is' in our question?
  

Top answer

a) What are the root causes ? What is the root cause ? b) What is the reason ?

  • a) What are the root causes ?
  • What is the root cause ?
  • b) What is the reason ?
  • What are the reasons ?
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2 Answers
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a) What are the root causes?
What is the root cause?

b) What is the reason?
What are the reasons?
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a) what are the root cause? (Incorrect. What is the root cause?)

b) what is the reason? (Correct)

when we need use 'are' or 'is' in our question?

These are cases of inverted order. The subject in each sentence follows the verb, so you might be confused. Turn them around to see.

What is the root cause? The root cause is what?

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