Question tags are short questions added to the end of statements in spoken English to confirm or encourage a response about the statement. Positive statements take negative question tags like "aren't you?", while negative statements take positive tags like "are we?". Question tags can be formed in different tenses and the tag should be positive if the statement contains negative words like "rarely" or "never".

1. Question Tags
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Adapted from:
www.tolearnenglish.com

2. Question tags???
Question tags are the contracted short questions at the end of
statements.
Question tags are used in spoken English more than written
English
They are used to confirm positive or negative statements; or to
encourage a reply from the person we are speaking to.
 They are can be asked in various tenses (past, present,
conditional etc)

3. Positive statements…
 A positive statement should be followed by a negative question tag:
- You’RE from France, aren’t you?
- You’VE been here before, haven’t you?

4. Negative statements…
 A negative statement should be followed by a positive question tag:
 - We AREN'T going yet, are we?
- You’re NOT from around here, are you?

5. …
 If sentences contain words that have negative meaning such as hardly, rarely,
barely, never, the question tag should be definitely positive.
- You RARELY go out, do you?
- We’ve NEVER met before, have we?