Before <doing> / No matter / Can't...until

Step 1. Check our samples. Listen-repeat, find something new that's useful to YOU.
If needed, write down for "listening for details" practice and feel free to share with us
Step 2. Analyse the variations of the structures further. Ask us questions in the comment section.
Step 3. Create your sample(s) aand share in your group or in the comment section below.