Meter
-The sturcture of the poem base on the rythmn and syllables

Iambic
A foot which starts with an unaccented and ends with an accented (stressed) syllable. It is the most common meter in the English language and naturally falls into everyday conversation. An example is "To be or not to be" (the accented syllables are italicized) from Shakespeare's Hamlet.
Trochaic
The opposite of an iambic meter. It begins with an accented then followed by an unaccented syllable. An example is the line "Doule, doule, toil and trouble." from Shakespeare's Macbeth.
Anapestic
A foot which has two unaccented syllables followed by an accented syllable. Example: "I arise and unbuild it again" from Shelley's Cloud.

-Meter help express the emotion of the poem