may/might be able to + verb (base form)

Lessons from the past: am, is, was, being, & been are all linking verbs. The may or might just explains the verb.

If you google 'modal verb", you will get an explanation of the role of the Might and May

Mookbark

'might' is a modal verb expressing the lowest levels of certainty, [1-25%]. These modals are illustrations of an individual speaker's feelings of how certain they are something will happen/come to pass. 'may' is a modal of expressing 26-50% certainty.

'be able to' means the same as 'can', as in "He can see you today". But for most dialects of English we don't combine modal verbs -

*He might can see you today*

is ungrammatical [*...* denotes ungrammatical] so we use the semi-modal substitution for 'can', which is ' be able to'.

'see' means the same as 'meet with someone'.