The sonnet I am going to analyze was written by William Shakespeare, it is divided into three quatrains and in a rhyming couplet, just like all Shakespeare's sonnets.
This is the 20th sonnet of a collection of 154 poems (the biggest in the English Renaissance).

The speaking voice says that the object of his passion was painted with the face of a woman by Nature. He also means that his love connects male and female beauty in a single beauty (the Master Mistress of my passion). In portraying his love Shakespeare says that he has got the gentle heart of a woman even if his heart is not used to shifting and changing the object of love as women do. Talking about the fear youth's eyes he says that his eyes are more shining  that the ones of women and in addition they are less false because they do not roll around so often. His eyes make the object of his look nicer. Besides the colours of his fear youth control all hues. As a matter of fact he captures all women's souls and at the same time he manages to steal men's eyes. The speaking voice underlines how at first Nature wanted to create him as a woman but seems his creation was so beautiful and Nature is a woman too, so she fell in love with her beauty and therefore added something that was without value for a man but guaranteed a woman's pleasure. The sonnet ends with an invocation the poet makes: he wants to enjoy the fair youth love and leaves his love to women.

After a first analyse I can say that this poem talks about men and women.

The speaking voice is addressed to a man who is so handsome that both women and men are amazed by him. Beauty isn't the only quality of this person, as a matter of fact he has got a woman's gentle heart but not acquainted with shifting change (lines 3-4), and his eyes are more bright then theirs(relating to women) (line 5).

This man is like this because at first Nature created a woman, so handsome that she was falling in love with her, but a female can't fall in love with another female, so Nature decided to turn this wonderful woman into a man.

So women will love this man for their pleasure, but Shakespeare will love him only for love.

In this sonnet we find two big semantic fields: body and feelings.

The words that recall us to the body are: face, hand, heart, eye and eyes.

The semantic field of the feelings is formed by the words: passion, gentle, false, bright, gazeth, amazeth, pleasure and love.

In this sonnet we find the themes of love, beauty and passion. Real beauty should assemble both men and women characteristics.

Probably Shakespeare wrote this sonnet because he wanted to say that we aren't only male or females but we have got something masculine and something feminine in our body and in our behaviours.