Sonnet 30 up of fourteen lines in three quatrains and a couplet, rhyming "abab cdcd efef gg". While using the rhyming and metrical structure of the 'English' or 'Surreyan' sonnet, Shakespeare often also reflected the rhetorical form of the Italian form also known as the Petrarchan sonnet. It divides the sonnet into two parts: the "octet" (the first eight lines) usually states and develops the subject, while the "sestet" (the last six lines) winds up to a climax. Thus a change in emphasis, known as the "volta", occurs between the end of the eighth and the beginning of the ninth lines —
Sonnet 2 child and thereby protect himself from reproach by preserving his beauty against Time's destruction. Sonnet 2 begins with a military siege metaphor, something that occurs often in sonnets and poetry — from Virgil (‘he ploughs the brow with furrows’) and Ovid (‘furrows which may plough your body will come already’) to Shakespeare’s contemporary, Drayton, “The time-plow’d furrows in thy fairest field.” The image is used here as a metaphor for a wrinkled brow. Trenches are also carved into a field when a farmer plows, and the agricultural connotation is touched on two lines later with the image of worthless weeds.