Question

what is an action verb.
the boy jump on the table.

linking verb

David is happy to see you
anonymous
it's jumps or jumped
in that sentence


Ms. Sue
Shouldn't it be?

The boy jumped on the table.

What word shows action in that sentence? It tells what the boy did or is doing.

What word links the subject with the predicate in your second sentence?

mike
is

is joins the subject David with the word happy
Ms. Sue
Right!