Have you thought of...?has pensado en
I advise that...te aconsejo que
I don't feel like...no tengo ganas de
I have a lot to do. Next time I'll gotengo mucho que hacer la próxima vez iré
I recommend that Juan...le recomiendo a Juan que
I suggest that...sugiero que
I'm sorry, but I already have other planlo siento pero ya tengo otros planes
It's better for...to...es mejor que
It's not advisable that you...no te conviene
don't forget to...no te olvides de
it would be a bad idea to...sería mala idea
it would be a good idea to...sería buena idea
let's do it tomorrowhagámoslo mañana
thanks for inviting me, but I can'tgracias por invitarme, pero no puedo