A day dream explanation!

A day dream explanation!

In the 1st stanza the speaker is in a wedding sitting alone out in the open, and feeling sad about the bride because she knows that the bride’s life will be miserable.
From her mother’s heart seemed loath to part
That queen of bridal charms,
But her father smiled on the fairest child
He ever held in his arms. 
 In the 2nd stanza the speaker is describing how her mother felt when she saw her daughter as this charming beautiful queen, And her father is smiling to his perfect daughter even though he never held her in his arms when she was child, but now he is happy because he is benefiting  from this marriage . It was really strange to have such unpleasant thoughts in a happy ceremony because the poem was set up in a wedding of a young Victorian woman.  Among other people the speaker stood outdoors a wedding looking at a young girl getting married. Everyone looked happy and celebrating the cheerful occasion expect for the narrator.
On the other hand her insensitive father had a wicked smile on his face because he was happy to marry off his little girl who “ever held in his arms”. Actually the Victorian  women were expected to be married at an early age and  “marriage was a social duty, because it obliged the family and helped to widen social contacts” (Beckett 103).
The trees did wave their plumy crests,
The glad birds caroled clear;
And I, of all the wedding guests,
Was only sullen there!
In the 3rd stanza the speaker is describing the trees and how it looks beautiful, and the birds are singing and happy, but the speaker between all the guests is not feeling happy. The whole setting was very pleasant and joyful because everything was beautiful, the spring was cool, the trees were green and the birds were singing.
There was not one, but wished to shun
 My aspect void of cheer;
The very gray rocks, looking on,
 Asked, “What do you here?”
 And I could utter no reply;
 In sooth, I did not know
Why I had brought a clouded eye
 To greet the general glow
In the 4th and the 5th stanza the speaker is setting alone , staying away from the wedding, and the  rocks are asking what are you doing here ? But the speaker couldn’t answer these rocks, the speaker didn’t know why. The speaker couldn’t understand why she was not celebrating like others even though the whole atmosphere seemed joyful. In order to answer that, the speaker took herself “into a reverie". Everything around her suggested that nothing will remain the same.
We thought, “When winter comes again,
 Where will these bright things be?
All vanished, like a vision vain,
 An unreal mockery!
“The birds that now so blithely sing,
Through deserts, frozen dry,
Poor spectres of the perished spring,
In famished troops will fly.
 In the 6th and the 7th stanza the speaker is sitting on the bank, and kept his heart to him, then sadly sank into “the river”. Then the speaker is wondering when the winter comes, where all these joyful thing will disappear, the green trees and the singing birds, here the speaker means this marriage, after a while all these joyful and cheer and happiness will disappear. Soon enough summer will become autumn and then winter which will make the "green leaves” fall and the birds fly away because of hunger and cold.
 “And why should we be glad at all?
The leaf is hardly green,
 Before a token of its fall
Is on the surface seen!
” Now, whether it were really so,
 I never could be sure;
 But as in fit of peevish woe,
 I stretched me on the moor,
 In the 8th and the 9th  stanza the speaker is saying that the happy birds now will be frozen and hungry in the  deserts  when the winter  comes, and why should be happy at all when the leaf is hardly green and in the end it will fall down .
What is a Day Dream ?
A daydream is a visionary fantasy especially one of happy, pleasant thoughts, hopes or ambitions, imagined as coming to pass, and experienced while awake. There are many different types of daydreams, and there is no consistent definition amongst psychological. The general public also uses the term for a broad variety of experiences. Research by Harvard psychologist Deirdre Barrett has found that people who experience vivid dream-like mental images reserve the word for these, whereas many other people refer to milder imagery, realistic future planning, review of past memories or just “spacing out”–i.e. one’s mind going relatively blank—when they talk about “daydreaming.
While daydreaming has long been derided as a lazy, non-productive pastime, it is now commonly acknowledged that daydreaming can be constructive in some contexts. There are numerous examples of people in creative or artistic careers, such a composers, novelists and Filmmaker , developing new ideas through daydreaming. Similarly, research scientists, mathematicians and physicists have developed new ideas by daydreaming about their subject areas.
Classification
The poem is composed of eighteen stanzas, containing four lines each. Even to the trained eye, it doesn’t follow a set pattern. This would qualify as a free verse poem. Free verse, in terms of poetry, is defined as: Free Verse (vers libre): poetry written in either rhymed or unrhymed lines that have no set fixed metrical pattern. This applies to the poem because the poet chose not to follow the limitations of any existing style (ie. sonnet), and instead pursued her own means of style.
Pastoral: A poem that depicts rural and natural life in a peaceful, romanticized way. This applies to this poem because nature is very much romanticized; it is centered on the idea of a marriage of two seasons (spring, and summer).
Meter and Rhyme Scheme
Meter
Because the poem is free verse, in which there is no set fixed metrical pattern, there is no obvious metrical device by which to measure this poem.
Rhyme scheme
The trees did wave their plumy crests,
The glad birds caroled clear;
And I, of all the wedding guests,
Was only sullen there!
There was not one, but wished to shun
My aspect void of cheer;
The very grey rocks, looking on,
Asked, "What do you do here?”
The rhyme scheme to which this poem pertains is fairly straightforward: ABAB, ABAB, ABAB, and so on.
Theme of Nature
 Nature is the central theme of this poem. The author uses this theme to express their attachment to nature, and more specifically, the spring and summer months. This can be seen in the stanza: 
“We thought, "When winter comes again,
Where will these bright things be?”
All vanished, like a vision vain,
An unreal mockery!“
Theme of Romance
The author attaches romance to nature, in the way that she compares the transition from spring to summer as a marriage. For example:
"On a sunny brae, alone I lay
One summer afternoon; 
It was the marriage-time of May
With her young lover, June.”
Symbolism
The major symbol in this poem is the “marriage” of spring and summer. This specifically refers to the transition from May to June. This idea is presented based on the themes of nature and romance. The two are often presented in one poem because nature is viewed as a very romantic thing. Another symbol is winter to death, and spring and summer to life. Winter, obviously, kills off nature. Grass doesn’t grow, birds migrate, and trees lose their leaves. Winter is grey, as the poem notes. Spring and summer, however, account for the life of nature, when birds sing and trees bloom.
Irony
What is an irony? 
It is said that an irony is the use of words that express the opposite of their literal meaning; a statement or a situation where the meaning is contradicted by the appearance or presentation of the idea.
 What are the kinds of irony?
There are many types of ironies yet these are the major three kinds of irony which are commonly recognized. First, verbal irony, which is the intended meaning of a statement, differs from the meaning that the words appear to express. Second, the dramatic irony, in which the audiences know more about present or future circumstances then a character in a story. Finely, the situational irony, involves a clash between what is expected or intended and what actually occurs.
In the poem “Day Dream,” we can assume that there is a verbal irony in the seventh stanza., 
“We thought,
"when winter comes again,
where will these bright things be?
All vanished, like a vision vain,
An unreal mockery!“
Here the persona seems to be attending a wedding which is believed to be a joyful event, still, the speaker is gloomy here for the reason that it is as if the bride was some kind of product to be bought and take advantage of her. And this is why the speaker is not celebrating the marriage so through the use of irony the speaker shows the devastation of the girl. 
Therefore, in these lines there is an irony, as the speaker questions about the bright things in nature and where will they go when the winter comes? And replies that they will probably all vanish as if there were not real at all ” like a vision vain”. This is connected with how the Victorians reflection of the cycle of the seasons, they are connected to the cycle of human life, they are both short-termed.  This is reflected on the happy occasion, it is temporary and in time, it will change, thus, the wedding is a mockery because it is the end of this Victorian bride’s life.