Question Tags (or Tag Questions)
In English, when we speak, (or when
we write informally), we often add, (or ‘tag’), a small question at the end of the sentence. We
use the question tag, because we want to check that the information is true;
or we want to ask the other person if he/she agrees with us.
In French, they ask: “N’est-ce pas?”: In Italian: “È vero?”;
in German: “Nicht wahr?”; etc.
In English, we ask the question by using Question Tags, FORMED from the original verb.
 
 
a)   
The
question tag can be positive:
                                         “It’s not very warm, is it?”
b)   
Or,
the question tag can be negative:
                                         “It’s
very warm, isn’t it?”
We put positive
question tags after negative statements.
ê                                                                                                                                                                        We put negative question tags after positive
statements.
 ê                                                                                                                                                                                                           ê                                                                                                                                                                                      We don’t put tags after questions.
ê                                                                                                                                                                                                           ê                                                                                                                                                                                      We don’t put tags after questions.
 
 
  | Statement                                                                  Tag | Statement      Tag | Question                                                                                                   Tag | 
 
  |  -                                                                                   +
 |                      +                                                             - |                       ?                                                                                                      +     - | 
 
  | “He’s not very old, is he?”
   | “He’s very old, isn’t he?” | “Is
  he old?”                                                                         isn’t he | 
 
 
 
Ø  The verbs we use are the THREE PRIMARY AUXILIARY VERBS     ‘To BE;    
‘To HAVE’,    ‘To DO’.(in all of their Tenses).
 
Ø  Other verbs we use are the NINE MODAL AUXILIARY VERBS    ‘CAN’… ‘COULD’:   ‘MAY’…‘MIGHT’:    ‘SHALL’…‘SHOULD’:    ‘WILL’…‘WOULD’:    and …‘MUST’.
 
For example,
if the sentence has the verb ‘to be’, (am, are, is; was, were, will be: etc.)
this is used as the question tag: “I
am happy,
aren’t I?” “You aren’t sad, are you?”
“He is a teacher, 
isn’t he?” “She wasn’t in France, was she?” “It was a radio, wasn’t it?” “We
weren’t lost,
were we?” “They were taxi
drivers, weren’t they?” “You will be happy, won’t you?”
 
All PRIMARY
AUXILIARY and MODAL
AUXILIARY VERBS are used in the same way.
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1.      “I have passed
the exam, haven’t I?”
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 - “She does look nice, doesn’t
     she?”
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 - “Peter can’t speak German, can
     he?”
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 - “Ann wouldn’t speak
     to Mary, would she?”
 
If the
sentence has NO auxiliary verb, WE
USE THE AUXILIARY VERB, “TO DO”.
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 - “You like apples, don’t you?” is
     the same as (“You do like apples, don’t you?”)
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 - “She ate a lot of food, didn’t
     she?” = (“She did eat a lot of food, didn’t
     she?”)
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