I saw in a grammar book mentioned something like this :
Liz can speak French very well.
Then I saw another example saying like this :
She often eats durians
My mother always wipes the floor.
With those examples, I got a little bit confuse. Why is the 1st example not saying "speaks" as it is referring to Liz which is only 1 person? Is it because it is referring to Proper Noun ?