Sonnet 3 form of a Shakespearean sonnet: fourteen decasyllabic, iambic pentameter lines, that form three quatrains and a concluding rhyming couplet. It follows the form's rhyme scheme: "abab cdcd efef gg". Each line of the first quatrain of Sonnet 3 exhibits a final extrametrical syllable or "feminine ending". The first line additionally exhibits an initial reversal: In this sonnet, the poet is urging the 'fair youth' to preserve something of himself and something of the image he sees in the mirror by fathering a child, "Now is the time that face should form another". The message is reiterated in the last lines
Sonnet 118 beginning with the third quatrain. Traditionally the administering of emetics, the trope worked in Sonnet 118, had three purposes: to renew the palate, to forestall the onset of sickness, and to counteract poison. The sonnet also picks up the motif of "palate", "cup", and "poison", left off at the end of Sonnet 114. The first pair of lines describes how "we our pallat urge"; "urge" means to 'intensify' or 'sharpen' the taste, but the word was used also of distillations which are 'urged' to a degree that a compound is yielded. "Appetites" are sharpened or made more acute ("more keen")