[donnach]

In the following sentence:

Chomsky suggested that children have a built-in mechanism, which he called the Language Acquisition Device, or LAD, which pre-programs them to develop grammar based on the linguistic input they receive.

1. Is "to develop grammar" an object complement? If not, what is it?

2. What is "based on"? Is "based" the verb, with "grammar" the subject and "on the linguistic input" an adverbial phrase modifying "based"? Or....?

There are verbs like "points to", etc. that seem to require a preposition after them to make sense. Are they just regular old verbs, nothing special?

Thank you,

Donna