Iambic Pentameter
The most common meter in English is the Iambic Pentameter. Latin and Greek used the hexameter, but English has a different pattern of stress.
An iambic foot is just like one beat of the heart: da-DUM.
A standard line is five iambic feet, so five heart beats.
- Example: When I do count the clock that tells the time
- Example: To swell the gourd and plump the hazel shells
You can almost tap your foot to these.
x / x / x / x / x /
When I do count the clock that tells the time
x / x / x / x / x /
To swell the gourd and plump the hazel shells
Note how "hazel" - a two-syllabic word - spans two feet.
The notation above is Scansion. The odd lines consist of two symbols: x marks an unstressed (ictic) syllable. / marks a stressed (*nonictic) syllable.
Ictus vs stress: stressed and unstressed syllable in the meter might not be the same ones that are stressed in normal speech. A weak syllable between two weaker syllables might be promoted, and vice-versa.