How to prevent these guard passes?

What are tips to preventing/defending these BASIC guard passes?

1. http://jenbjj.com/NewTechnique/Tech3a.html

2. http://jenbjj.com/NewTechnique/Tech3b.html

Thanks for your time.


Because I taught them, there is no defense for it.

Just kidding. Have you see my Ultimate Guard 1? The techniques in the open guard video would should you how to prevent your opponent from getting the leg on shoulder position.