All the main verb tenses in Gàidhlig, no more mystery!

[akerbeltz]

Hi Cynthia. It does verb - subject - object/predicate in Gaelic. Most idiomatically, that would be ithidh Iain lòn but learners often start with the bidh Iain ag ithe lòn construction because its involves a little less grammar to begin with. But that technically mean "Iain will be eating lunch".

[AlexAkimov]

if I do the future tense and I say John will eat lunch. Do I say Bidh Ian ag ithe lon. The person then the action and the verb. Cynthia

You haven't written them in that order. You have verb-subject-compliment, which is correct. That is how Gaelic works no matter the tense. You could write the same sentence using the root verb of "eat" in future tense i.e. not using to be (bidh), all depends the exact nature of the phrase you're going for.

[akerbeltz]

Also note lon is a blackbird, lòn is lunch, those accents matter