ANALYSIS

The poem, Perhaps by Vera Brittain is a moving piece of anti world war one poetry dedicated to Vera's late fiancé, Roland Leighton. 
there is continuous repetition of the term 'Perhaps' at the start of each stanza. The word, perhaps is used to express uncertainty or possibility. in the poem, Vera Brittain is expressing the uncertainty yet possibility behind her ever feeling the way she did before. 
Typically, when your in love, the world seems like a brighter, happier place. For Vera Brittain, that world died when Roland was shot. 
each stanza seems to be associated with a season, as if the years are going by and she still hasn't managed to get over him. this is created through the use of visual imagery in each stanza. for example, stanza one talks about the sun and blue skies to symbolise the summer time, she then goes on in stanza two to address the "golden meadows" and "white may-blossoms", representing spring.Stanza three mentions the "autumn harvest fields" to obviously show the autumn/fall time passing. Stanza four talks about the "passing of year dying" and the listening to of Christmas carols which easily symbolise winter at the end of the year. here in Australia the seasons are arranged differently but this poem was written over in Europe. in the final stanza she states simply that her heart is too broken to be fixed and that her world will never be the same as it was before.
at the end of each stanza (aside from the final one) she mentions his absence. she talks in sorrow about how he is no longer there with her, how he is no longer able to listen to Christmas songs and that she feels as if she is missing a piece of her and she'll never get it back.
the poem creates a melancholy mood through the despondent tone and sense of hopelessness. the terminology throughout the poem fabricates the illusion of seasons passing while being ultimately buried in sorrow. this might have been the mood she was feeling at the time as well, considering the poem was actually published in 1934, 19 years after her fiance was killed. this means that for 19 years she was sad and alone, watching the years pass and the seasons flow, hence the seasons per stanza.