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We use short Yes / No answers to avoid repetition of a sentence which is redundant / avoidable and saves time.
Questions that need either a yes or a no answer are called yes-no questions.
We can not use questions words like: what, how, why, who, etc. while making Yes/No questions.
Yes / No questions answered with yes or no. It means when we are asking yes/no questions, we are expecting the answer, yes or no.
Yes or No questions are made, using the verb (am, is, are, was, were, have, had, do, does, did, can, will, should etc.) at the beginning of a sentence. Namely, subject and verb change their position in statement and question.
Lets see how, subject and verb change their position in statement and question.
"Auxiliary-cum-verbs" are :
These 11 auxiliaries are also used as verbs, therefore, they are called Auxiliary–cum–verbs. These are used to form Tenses. ( Please refer Tense Table).
"Pure Auxiliary verbs" are :
These 20 auxiliaries only support normal verbs, therefore, they are called Pure Auxiliary Verbs. They are also called Models or Model Auxiliary Verbs.
