No, they're not right.
eat -- taberu/tabemasu
eating -- tabeteiru/tabeteimasu
ate -- tabeta/tabemashita
not eat -- tabenai/tabemasen
will eat -- taberu/tabemasu or tabeyou/tabemashou
Notice that "eat" and "will eat" can be be the same forms. This is because Japanese verbs don't have a future tense (English verbs don't either, really. This is made up for with the modal verb "will").
Also, the verb taberu is transitive and requires an object, even if it's not explicitly stated, so it's not the same as English "eat", which can be either transitive or intrasitive. And I assume you know that the first in each pair is plain form and the second is polite form, but I figured I'd state it for the sake of thoroughness.
[Edit] Now I see what happened and why they were all jacked up -- you have to enter the verb in its dictionary form, in this case taberu. The auto-conjugator assumed that tabemasu was the plain form and conjugated it accordingly, which led to the mess that I saw.