Adverbs and Sentence Enders
く / に / ね / よ / よね
Turn an い-adjective into an adverb by swapping い for く, and a な-adjective by adding に. A handful of words (たくさん, ぜんぜん, よく) are adverbs on their own. Close a sentence with ね to invite agreement, よ to deliver news, or よね to do both.
い-adjectives → drop い, add く
Turn any い-adjective into an adverb by dropping the final い and attaching く. 「はやい」 → 「はやく」 ("fast/quickly"). 「おおきい」 → 「おおきく」 ("loudly/largely"). The same drop-い-add-something pattern as in negative and past conjugation — only the suffix changes.
な-adjectives → add に
な-adjectives become adverbs by attaching the particle に. 「しずか」 → 「しずかに」 ("quietly"). 「きれい」 → 「きれいに」 ("beautifully"). This に is the same particle from L7 — here it marks the manner of the action.
Adverb placement: before the verb, otherwise free
An adverb must precede the verb it modifies, but where it sits before that verb is up to you. 「アリス は はやく たべる」 and 「はやく アリス は たべる」 both mean "Alice eats quickly." Particles, not order, tell you who does what.
Some adverbs aren't derived
Words like 「たくさん」 ("a lot"), 「ぜんぜん」 ("(not) at all"), and 「よく」 ("well/often") work as adverbs on their own without any conjugation. 「たくさん たべる」 = "eat a lot." 「ぜんぜん」 typically pairs with a negative: 「ぜんぜん たべない」 = "don't eat at all."
Sentence enders: ね / よ / よね
Three particles glue tone onto the end of a sentence. 「ね」 invites agreement ("…, right?"). 「よ」 signals new information ("…, you know"). 「よね」 combines both, in that fixed order — never 「ねよ」. 「おいしい ね」 = "it's delicious, right?" 「おいしい よ」 = "it's delicious, I'm telling you."
Vocabulary in this lesson
About Japanese adverbs and sentence-ending particles
Adverbs describe how something is done, and Japanese builds most of them straight from the adjectives you already know: an い-adjective drops its い and adds く (「はやい」 → 「はやく」 = "quickly"), while a な-adjective just takes に (「しずか」 → 「しずかに」 = "quietly"). A handful of words like たくさん and よく are adverbs on their own. The adverb goes before the verb it modifies. This lesson also covers the sentence-ending particles ね, よ, and よね, which add tone — inviting agreement, delivering news, or both. Together they round out your core JLPT N5 grammar and make your speech sound natural.
Frequently asked questions
How do I make an adverb from an adjective in Japanese?
It depends on the adjective type. An い-adjective drops its final い and adds く (「はやい」 → 「はやく」 = "quickly"). A な-adjective simply takes に (「しずか」 → 「しずかに」 = "quietly").
Where does an adverb go in the sentence?
An adverb must come before the verb it modifies, but its exact position before that verb is flexible. 「アリス は はやく たべる」 ("Alice eats quickly") is natural, and moving はやく earlier is also fine.
Are all adverbs formed from adjectives?
No — some words are adverbs on their own, with no derivation: 「たくさん」 ("a lot"), 「ぜんぜん」 ("(not) at all", used with a negative), and 「よく」 ("well" or "often"). You simply learn these as vocabulary.
What do the particles ね, よ, and よね do?
They add tone at the end of a sentence. 「ね」 invites agreement ("…, right?"); 「よ」 delivers new information the listener may not know; and 「よね」 combines both — presenting news while seeking agreement.
What is the difference between よ and ね?
「よ」 pushes information toward the listener ("just so you know"), while 「ね」 pulls the listener in, seeking shared agreement ("right?"). Using よ when ね is expected can sound abrupt, so the nuance matters.
Credit
These lessons follow the structure, sequence, and grammar-first approach of Tae Kim's Guide to Learning Japanese. We are grateful to Tae Kim for making his guide freely available; the explanations here are our own retelling, and the interactive drills are original to this site.