How to Say "You Know" in Japanese: Sharing New Information (...desu yo)
Hello! In the previous lesson, you mastered '〜ね' (ne) to seek empathy and learned to add warmth to your conversations. In this lesson, we will study the best partner and simultaneously the rival of 'ね'—another important sentence-ending particle, '〜よ' (yo).
'〜よ' is used when you are providing new information that your conversation partner likely doesn't know, or when you are clearly expressing your opinion. If 'ね' is for "sharing," then 'よ' is for "providing." By mastering both particles, you will speak like a pro!
🎯 Lesson Goal
Learn to provide new information to your conversation partner or to clearly express your opinions and assertions by adding 'よ' (yo) to the end of a sentence!
Step 1 Discover
Let's look at how this is used in a real conversation. Two colleagues are talking about a cake in the office.
このケーキ、美味しそうですね。
(Kono ke-ki, oishisou desu ne.)
ええ、とても美味しいですよ。ぜひ食べてみてください。
(Ee, totemo oishii desu yo. Zehi tabete mite kudasai.)
Did you notice?
Kenji uses "〜ね (ne)" to seek agreement ("Looks delicious, doesn't it?"). Yuki has already tasted it, so she uses "〜よ (yo)" to give him new information ("It IS delicious, I'm telling you!").
Step 2 The Pattern
The information-providing marker 'よ (yo)' simply attaches to the end of a sentence.
Basic Chunk
よ。
( yo.)
🔑 Key Point: The nuance of "You know"
Adding 'よ' gives your statement the nuance of providing information or making a slightly stronger assertion. It's like saying, "(You probably don't know this, but) this is how it is, you know."
Simple fact: 「このペンは、健司さんのです。」 (This pen is Kenji's.)
Providing info: 「このペンは、健司さんのですよ。」 ((In case you are looking for it) This pen is Kenji's, you know.)
🌟 Pro Tip: '〜ね' vs '〜よ'
〜ね (Agreement): Seeks agreement on information or feelings you both share.
「今日は暑いですね。」 (It's hot today, isn't it? — You feel that it's hot too, right?)
〜よ (Information): Informs the partner of information that only you possess.
「明日は暑いですよ。」 (It will be hot tomorrow, you know. — You probably don't know, so I'm telling you.)
Step 3 Pattern Practice
Look at how adding "yo" gives the sentence an informative, helpful, or assertive tone. Read these out loud!
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Task 1: Giving a recommendation This restaurant is delicious, you know.
このレストランは、美味しいですよ。
(Kono resutoran wa, oishii desu yo.)
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Task 2: Informing someone of the time It's already 10 o'clock! (In case you didn't know)
もう10時ですよ。
(Mou juu-ji desu yo.)
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Task 3: Giving directions City hall is next to that building, by the way.
市役所は、あのビルの隣ですよ。
(Shiyakusho wa, ano biru no tonari desu yo.)
Step 4 Make It Yours!
This is the most important step! Share your knowledge or advice with a conversation partner using 'よ'. Try building sentences using the cheat sheet below.
👉 YOUR ADVICE ですよ。
Vocabulary Cheat Sheet
Information to Share
- おいしい oishii (delicious)
- たかい takai (expensive)
- ちかい chikai (close)
- あぶない abunai (dangerous)
Situation / Advice
- じかんです jikan desu (it's time)
- あめです ame desu (it's raining)
- むりだよ muri da yo (it's impossible)
- だいじょうぶだよ daijoubu da yo (it's okay)
Bonus Go Beyond the Basics
In real life, you'll need to warn people ("It's NOT safe, you know!") or speak casually with friends. Here’s how to use 'よ' in negative and casual forms.
🙅♀️ 1. Providing Negative Info
学生ではありませんよ。
(Gakusei dewa arimasen yo.)
危なくないよ。
(Abunakunai yo.)
🤝 2. Friendly & Casual Advice
美味しいよ。
(Oishii yo.)
無理だよ。
(Muri da yo.)
Summary Lesson Review
Providing Information: Add 〜よ (yo) to the end of a sentence to provide new information that your partner likely doesn't know.
Nuance of "Yo": It gives the sentence the helpful or assertive nuance of "(You probably don't know this, but) this is how it is, you know."
Casual Nouns: When using nouns in casual speech, you must add だ (da) before the "よ" (e.g., 無理だよ).
Practice Drill
Explanation