ruurubukku o yomu.

direct object particle

Breakdown of ruurubukku o yomu.

• 読よむ: to read
• ルールブック: a rulebook

Questions & Answers about ruurubukku o yomu.

What does ルールブック mean, and why is it written in katakana?

ルールブック means rulebook.

It is written in katakana because it is a loanword borrowed from English:

• ルール = rule
• ブック = book

Katakana is commonly used for:

• foreign loanwords
• foreign names
• some onomatopoeia
• emphasis

So this is a very normal way to write rulebook in Japanese.

How do you read ルールブックを読む out loud?

It is read:

ルールブックをよむ
Romanized: ruurubukku o yomu

A couple of pronunciation notes:

• ルール has a long vowel: ruu-ru
• ブック has a small ッ, which creates a short pause before ku
• 読む is read よむ, not どく in this sentence

So the whole sentence sounds roughly like:

ruu-ru-bukku o yo-mu

What does the particle を do here?