Let me analyse the sentence ' How are you ? ' in accordance with English grammar. How is an interrogative adverb and the rest is made up of S V. I think , therefore, the sentence is classified into so-called the sentence pattern # 1(S V) Is my analysis correct ? But if you think it over, you will realize that my analysis is a bit strange. That is because we usually give the following answer to the question. ' I'm good !' This sentence is categorized into # 2 (SVC) Then, my analysis about the interrogative sentence above is wrong ? What do you think about this discrepancy ?