"O woe! O woeful, woeful, woeful day! Most lamentable day, most woeful day That ever ever I did yet behold! O day, O day, O day! O hateful day! Never was seen so black a day as this. O woeful day! O woeful day!"This excerpt is from?

From  the tragedy play by William Shakespeare "Romeo and J u li et", Act IV scene v  .

Explanation:  

The lines given in the question are spoken by the Nurse. Act IV scene v of the play shows the nurse lamenting over the "death" of Jul iet, who had seemingly faked her de ath so that she won't have to marry Paris and betray her already married husband and love Romeo.

Romeo and Ju li et, being family foes for decades, know they cannot be together with the blessings of their respective families so they thought of a plan to stay together. The plan was to fake Jul i et's death so that Romeo will steal her corp se and they'll run away to a far place. By taking po is on that'll make her sleep, thus a momentary de ath, she tries to elude the marriage with Paris. It was this scene of the discovery of her death that led the nurse and her family members to mourn her, with Lady Capulet claiming "deat h" is her "son -in - law".

banquo is a great foil