TAG
QUESTION
DEFINITION
A question tag or tag question is a grammatical
structure in which a declarative statement or an imperative is turned
into a question by adding an interrogative
fragment (the "tag"). For example, in the sentence "You're John,
aren't you?", the statement "You're John" is turned into a
question by the tag "aren't you". The term "question tag"
is generally preferred by British grammarians, while their American
counterparts prefer "tag question".
In English, the verbs
used as auxiliaries are to be, to do, to have, and the modal auxiliaries. All of
these auxiliaries can be used in tag questions and short answers.
Tag questions in
English
English tag questions,
when they have the grammatical form of a question, are atypically complex,
because they vary according to four factors: the choice of auxiliary, the
negation, the intonation pattern and the emphasis.
Auxiliary
The English tag
question is made up of an auxiliary verb and a pronoun. The auxiliary has to
agree with the tense, aspect and modality of the verb in the preceding
sentence. If the verb is in the present perfect, for example, the tag question
uses has or have; if the verb is in a present progressive form, the tag is
formed with am, are, is; if the verb is in a tense which does not normally use
an auxiliary, like the present simple, the auxiliary is taken from the emphatic
do form; and if the sentence has a modal auxiliary, this is echoed in the tag:
• He's read this book, hasn't he?
• He read this book, didn't he?
• He's reading this book, isn't he?