* Question tags 1
* Question tags 2
* Question tags 3
* Question tags 4
* Question tags 5
* Question tags and Echo Questions
* Emphatic "do"
* So Do I / Neither do I 1
* So do I / Neither do I 2
* Short answers 1
* Short answers 2
Finally, here you are a link for more information about these uses of auxiliary verbs.
Hope it helps!
Ana
