Sentence patterns.
I [heard [her [scold the boss]]].
subject [verb [subject [verb object]]]
After a verb of perception you have a clause (telling what was
perceived) with its subject in the object case and a verb that is a
bare infinitive. (I heard it: She scolded the boss.)
____________
Let [me [tell you something]]
verb [subject [verb object object]]
After
let you have a clause (telling what is to be permitted)
with its subject in the object case and a verb that is a bare
infinitive. After
tell you have an indirect object (the
person being told) and a direct object (what was told). (Permit
this: I tell you something.)
CJ