As I found out there is no difference between simple present and present continuous structure in swedish.
No, ate is past tense but eats, is eating, and äter are present tense.
ate is åt in Swedish.
Why is it one apple and not a apple i thought ett could be used for both one and a
a apple is not accepted because you need to say an apple (a becomes an before a vowel sound). ett äpple can be either one apple or an apple.
From the look of things i think En is used for living things like boy,man,e.t.c and ett us used for non living things like apple
Yes and no, you can say: Ett öga (an eye), or Ett par rävar (a few foxes) so not all cause but I would say: Yes, in may cause.