The rhyme pattern in this stanza is used to create a different rhythm and to get the poem a great flow to the read of the stanza, it is great because it helps you flow over the reading and you can read it more easily and it helps you continue the read and gives it a certain rhythm.
Ok, so “is” is the linking verb and I’m pretty sure the predicate is... effective? I’m not sure tbh! But I really do think it is that. I’m sorry if it is incorrect. My apologies.
