Sentence Basics Japanese Grammar Lessons

The word です is a basic polite ending that acts as the backbone of many beginner Japanese sentences. It attaches to nouns and na-adjectives to politely state what something is, or to describe its state. While it is often translated as the English verb to be, です functions quite differently by serving as a polite marker for identities and descriptions rather than a standalone action.

The grammar point だ is the casual equivalent of です, used to declare what something is or describe its state. You will encounter it constantly in everyday conversations with friends, family, and in casual writing like manga or social media. While English translations often use words like am, is, or are as rough aids, だ functions differently by attaching directly to nouns and na-adjectives to finalize a statement rather than acting as a linking verb.

The pattern ではありません is the polite way to say that something is not a specific noun or na-adjective. You will encounter it very early in your studies as the standard, formal negative counterpart to です. While it is often translated as am not, is not, or are not, it functions as a state-denying phrase linking a topic to a denied description.

じゃありません is the standard polite negative ending used in everyday conversational Japanese to say that a noun or na-adjective is not a certain thing or state. It acts as the negative counterpart to です when describing identities, professions, nationalities, or qualities. You will encounter this pattern immediately when learning basic introductions and descriptions, as it is essential for polite everyday speech.

The Japanese expression ではない is used to definitively state that a topic is not a certain identity or state. It attaches directly to nouns and na-adjectives to negate them in written, formal, or highly assertive contexts. While it is often translated as the English "is not", ではない carries a much firmer, stiffer tone than its casual spoken counterpart, じゃない.

The word じゃない is a casual Japanese ending used to say that something 'is not' a certain noun or na-adjective. It is the spoken, informal equivalent of ではありません and is commonly used when talking with friends, family, or people of equal or lower status. Because it directly negates identity or state, it is an essential everyday pattern for natural conversational Japanese.

でした is the polite past-tense ending used to state what something was or to describe a past state. You will encounter it early in your Japanese studies as the past-tense counterpart to です, letting you politely talk about past occupations, weather, and characteristics. While it is often translated as "was" or "were," it functions specifically to mark nouns and na-adjectives as polite statements about the past, rather than acting as a true verb.

だった is the casual past tense form used to express what something was or what a past situation was like. You will hear it constantly in daily conversation among friends and family, as well as in informal writing like diaries. While it serves a similar role to was or were in English, it attaches directly to nouns and na-adjectives to complete a sentence.

ではありませんでした is the polite past negative ending used to express that something was not a certain identity or state in the past. It attaches directly to nouns and na-adjectives, serving as a formal way to deny a past description. In everyday conversation, you will frequently encounter its more natural spoken counterpart, じゃありませんでした.

The ending ではなかった functions as the plain past negative state-marker for nouns and na-adjectives in Japanese. While grammatically classified as a casual or plain form, it carries a slightly stiff and formal tone compared to its everyday conversational counterpart, じゃなかった. You will encounter this structure frequently in essays, articles, literature, and formal narratives when a writer needs to clearly declare what someone or something was not.

じゃなかった is the casual ending used to state that a noun or na-adjective was not true or did not apply in the past. It serves as the plain conversational counterpart to the polite ending ではありませんでした, making it essential for everyday chats with friends and family. Learners will encounter this frequently when sharing past experiences, describing situations that changed, or correcting misunderstandings in casual conversations.

The ending ですか is the standard way to turn a polite noun or adjective sentence into a question in Japanese. By adding the question particle か to the polite ending です, you can ask about someone's identity, confirm a fact, or ask for a description. It is one of the first question patterns you will learn and is essential for polite daily conversation.

The pattern ～のが好きです is used to state that you like doing a specific action or activity. Because the adjective 好き (like) requires a noun phrase, the particle の is added after a dictionary-form verb to turn the action into a noun. This is an essential beginner structure for talking about your hobbies and preferences in Japanese.

The form で acts as the te-form of the copula です or だ for nouns and na-adjectives. It is used to link two or more descriptive clauses together in a single sentence, often translating to "and". With event nouns, it can also indicate a cause or reason, meaning "because of" or "due to".

A は B です is the basic polite pattern for saying that topic noun A is, belongs to, or is classified as noun B. は marks the topic under discussion, the second noun supplies the identity or category, and です ends the sentence politely. Learners meet this high-frequency frame early in self-introductions, simple descriptions, and careful classroom speech.

Noun1 + も + noun2 + です is a beginner polite sentence pattern that says a second noun shares the same identity, role, or category as something already in context. も takes the slot that は would fill in a plain identity sentence, so the new topic is presented as an added member of the same group. Learners meet this micro-pattern early in self-introductions, classroom talk, and simple classification with です.

A は B ですか turns a polite noun statement into a yes/no check: You ask whether topic A is, equals, or counts as predicate B. は marks the topic under discussion, the noun before ですか is the identity, role, or category being checked, and か marks the whole sentence as a question. Beginners meet this high-frequency pattern early in introductions, classrooms, shops, and other polite everyday checks.

はい、そうです is a fixed polite reply that confirms a yes-no nominal question: Yes, that content is correct. Beginners meet it early after patterns such as A は B ですか, when the answer is simply yes rather than a full restated sentence. It is common in classrooms, service talk, and everyday polite conversation, and it points back to what was just asked instead of introducing a new fact on its own.

いいえ、違います is a fixed polite answer that denies a confirmation or identity claim. Learners meet it early as the negative partner of はい、そうです after questions such as A は B ですか. The phrase says the previous guess is wrong; it does not by itself name the correct person, thing, or label.

A は B 語で何ですか is a polite fixed question that asks what topic A is called, or how it is said, in language B 語. A is usually a noun, demonstrative, or quoted word; B 語 is a language name such as 英語 or 日本語; particle で marks that language as the medium of naming. Learners meet this pattern early in classrooms and travel talk when checking vocabulary across languages.

A はどうですか is a high-frequency polite pattern that puts a noun or noun phrase A as the topic and asks how it is, how it is going, or what (you) think of it. In everyday conversation it covers state checks, opinion checks, and soft how-about-A offers; context and the answer type show which reading is intended. Learners meet it early at N5 because it fits classroom talk, service situations, and casual-polite chat about study, work, health, food, and plans.

感覚＋がする is a high-frequency N5 pattern for saying that a smell, sound, taste, body feeling, or vague impression is noticeable. A sensation or impression noun takes が, and する here means the sensation arises or is felt—not that someone deliberately “does” the smell or sound. You will meet plain and polite forms (する／します), past (した／しました), and negative (しない／しません) in everyday talk about what you notice right now or just noticed.

Clause-nominalizing の after a plain clause turns that clause into a noun-like unit so it can fill a subject, object, or other noun role in a larger sentence. It is especially natural when the content is concrete, observable, or felt directly—what someone is doing, what you saw or heard, or a reaction that feels immediate. At N4 you meet this use often in conversation; abstract facts, habits, and rules often fit こと better and are taught as a nearby contrast, not as this page’s main system.

こと turns a plain-form clause into a noun-like phrase so you can talk about a fact, idea, habit, or stated rule as a topic, object, or complement. You attach こと to the plain form of a verb or adjective, not to polite ます or です forms, then treat the whole phrase like a noun in the outer sentence. At elementary level you meet こと both in everyday fact phrasing and in written rule notices such as dictionary-form verb + こと.

の and こと both turn a plain-form clause into a noun phrase so it can take particles such as が, を, は, or に. の is often preferred when the action or state feels concrete, personal, or directly experienced, while こと fits facts, concepts, rules, and many fixed frames. At N4, learners meet this contrast when talking about likes, observed events, importance, ability, and decisions—without treating the two forms as free synonyms.

未～ is a productive Sino-Japanese prefix that builds nouns and noun compounds meaning something is not yet done, decided, finished, or reached. You often meet it in written Japanese, notices, forms, and everyday set words such as 未定, 未経験, and 未成年, often as a noun label rather than a free sentence adverb. The core idea is incompleteness or not-yet status; it is not the same as general non- (非～), bare absence (無～), or the free adverb まだ.

各～ is a productive prefix, read かく, that attaches directly before a noun to mark each or respective member of a shared set. It builds compounds such as 各国, 各地, 各自, 各駅, and 各社, which are common in reports, procedures, notices, and news-style Japanese. Treat it as a noun-forming prefix, not as a free-floating adverb and not as a simple stand-in for every English use of each.

～やん is a casual Kansai sentence-final ending that softens a finished plain predicate into confirmation, light assertion, or a short spoken reaction. Learners often map it to familiar standard forms such as じゃん, じゃない, or よね, but the Japanese ending itself is regional spoken material, not formal textbook Japanese. Meet it in friend-group Kansai talk and media; recognize it first, keep productive use optional, and leave nearby ～やねん for a separate explanatory pattern.

～やねん is a casual Kansai dialect sentence ending used to explain, clarify, or softly insist on a situation. After nouns and na-adjectives, it is the everyday counterpart of standard Japanese なんだ / のだ, with や doing the copula job of だ and ねん carrying the explanatory の-family feel. Learners mainly meet it in Osaka–Kyoto-style conversation, comedy, local media, and informal messaging—not in polite です/ます speech or formal writing.