Explanation of Sonnet's 97 figure of speech

In the third quatrain, he dismisses the “wanton burthen of the prime”—that is, the bounty of the summer—as unreal, as the “hope of orphans.” It could not have been fathered by summer, because “summer and his pleasures” wait on the beloved, and when he is gone, even the birds are silent.

Explanation:

yes, post it and i can try to you out.

it b =a chorus ik for a fact