Way, Style, Way Of
Noun and Suffix
どう
先生が、じゅう道のルールややり方を教えます。
The teacher is going to teach the rules and the methods of Judo.
北海道で、けん道をきわめるつもりです。
I'm gonna master the way of sword in Hokkaido.
武士道と騎士道の違いについて説明してください。
Could you please explain the difference between bushido and chivalry?
This is a word that's attached to the end of various other words. Think of a "road" as a way or method of something. For example, the どう in Judo is the soft "way." There are many words that end with 道, and you'll see them later on. For now, know that this means method of or way.
This word is added to the end of many different words, meaning it's treated like most jukugo (and uses an on'yomi reading). You know the on'yomi reading, so you should be able to read this word. Be sure to drop the 〜 when writing in the reading in the test, though. It's only there to show that it's added onto things and not part of the correct answer.