Answer: Capulet does not know that Juliet is actually alive.
Dramatic irony occurs when the audience knows something that the characters of a narrative are unaware of. In this case, the lines are an example of dramatic irony because Capulet believes Juliet to be dead. However, the audience knows that Juliet has taken a potion that makes her appear dead, but that, in fact, she is alive and plans to escape with Romeo.
Answer
The subjunctive verb mood is meant for expression suggestions, desires, wishes. Subjunctive mood is of three mods in English grammar. This is indicated by an indicative verb such as wish or suggest, paired then with a subjunctive verb.
