Shakespeare actually wrote in modern English, and the verb form you are asking about is, though now very rare, still in occasional use. Basically the story is this: if you see a familiar word with "-st" on the end, you will probably find the pronoun "thou" lurking close by. "Thou" always takes verbs ending in -st; "thou thinkest" is the same as "you (singular) think". Shakespeare used them interchangeably. Note this passage from King Lear:
Have more than thou showest,
Speak less than thou knowest,
Lend less than thou owest,
Ride more than thou goest,
Equals show, know, owe, and go. "Growest" obviously is "grow"
sonnet 18
i
Iambic pentameter.
sonnet
It makes fun of the blazon and exaggerated comparisons of beauty.
the English sonnet
Probably either Sonnet 18 ("Shall I compare thee to as summer's day") or Sonnet 116 ("Let me not to the marriage of true minds admit impediments")
It is also called the English sonnet. The other form is the Italian sonnet, or petrarchan sonnet.
A traditional English sonnet consists of 14 lines.
A Sonnet. Mainly an English Sonnet.
Sonnet LXXIII deals with decay as one ages, and how love is greater when it loves that close to death.
The English.