I attended the lecture but it was difficult for me to follow the lecturer (grips)
هذا حلى لها لكن مش متاكد

I atteneded the lecture but I got grips with the lecturer

my toothache is more painful tody than it was yesterday ( Yesterday)

my answer
|Yesterday there were more painful in my toothache than it is today
مش متاكد منها

I haven't got aclue how cars work (understand)

I'm not understand how cars work

yesterday my toothache was less painful than it's today

Yesterday my toothache was less painful than today
I attended the lecture but I didn't get to grips with it
I don't understand how cars work