Please can you help - contexts needed for teaching...

I have been sitting here trying to come up with contexts to prepare for a few of my session and I seem to have lost the....

Here they go:

-3rd conditional (if+past perfect+would+have+past participle) used for blaming /criticising

-Get used to doing something used for acquiring new habits

- I wish+wouldn't

-Have to, Mustn't used for obligation

-You'd better used for giving advice

I want to make sure that my lessons have a storyline, but being a new teacher, I am failing!!

Please could anyone help?

I would really really appreciate it.

Thanks

Solmaz