Final answer:
Shakespeare highlights lines in his plays using iambic pentameter, inverted syntax, and rhetorical devices like alliteration and onomatopoeia, making these lines stand out and engage the audience.
Step-by-step explanation:
Shakespeare employs various techniques to emphasize certain lines within his plays and make them appear more important. One prominent method is the use of poetic meter, particularly iambic pentameter, which is a rhythmic pattern consisting of five iambic feet per line. This meter can naturally emphasize certain words and phrases. Additionally, inverted syntax is used to maintain the iambic pentameter, which can draw attention to particular lines as it often requires the audience to pay closer attention to understand the meaning. Shakespeare also utilizes rhetorical devices such as alliteration and onomatopoeia, engaging the audience's auditory senses and highlighting key parts of the dialogue.