In an English or Sakespearean sonnet, the speaker presents a problem in the first twelve lines, divided in three quatrains. We can read for eample: "My mistress' eyes are noting like the sun", and the theme of the sonnet refers to the way beauty is depicted and how the beloved does not fulfill that convention of contemplating beauty. The last couplet usually expresses an idea in contrast to what had been presented previously in the sonnet.