The pronoun in the tag must match the subject. The auxilliary in the tag must agree with the tense in the preceeding sentence. Positive with negative tag. Negative tag with positive tag.
A positive statement is followed by a negative tagA negative statement is followed by a negative tag
Tag rugby is a sport that is often played in schools. The rules are the same as normal rugby but you tag people rather than tackle.
The tag question is "doesn't he?"
The question tag for "you were" would be "weren't you?"
She is (positive) beautiful, isn't (negative) she?
She can do it correctly, couldn't she? Is the correct question tag of the statement.
The tag question for "The book was lost" would be "wasn't it?"
Not sure what is meant by 'tag', but it is spelt as one word - Welcome.
The tag question for this sentence is "isn't he?".
ought is a "positive" word, so the question tag should be a "negative" you can replace "ought" with "should" so a possible question tag is shouldn't
It is like paintball mixed with laser tag. Same rules as laser tag but you use paintball guns with rubber ammo.
Rather than attempt to summarise the rules, which are numerous here is the web address to get the best information http://www.coachingrugby.com/tag/laws/laws.htm