Godan verbs (五段) are a class of verbs in Japanese. These are called Godan (五 =
5) because their conjugations use all 5 sounds of the Hiragana syllabary (あ, え, い, お, う).
These verbs are also called Verbs in う, since all of them end with an Hiragana symbols belonging to the column
Some of these verbs also end in る, so be careful not to confuse them for Ichidan verbs
Just like Ichidan verbs, the plain form of Godan verbs is the same as the base form (dictionary form) and does not require any conjugation.
The polite non-past form is formed by changing the last syllable from column う to the equivalent in column い, and then also adding the suffix ~ ます.
In the example above, the verb
hear (聞く) changes the syllable く from the う column (ku) to the corresponding syllable in the い column き (ki).
We then add ~ます to complete the polite form.