〜は〜です
Topic marker は
Meaning
Marks the topic of the sentence — "As for X, X is Y." The most common particle; it establishes what you are talking about.
Formation
[noun] は [noun / adjective] です
Notes
は is pronounced "wa" when used as a particle. The topic is usually old/known information already established in context.
Examples
私(わたし)は学生(がくせい)です。
I am a student.
Breakdown
これは本(ほん)です。
This is a book.
Breakdown
田中(たなか)さんは先生(せんせい)です。
Tanaka-san is a teacher.
Breakdown
日本(にほん)は大(おお)きい国(くに)です。
Japan is a big country.
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今日(きょう)はいい天気(てんき)です。
Today the weather is nice.
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私(わたし)は日本語(にほんご)が好(す)きです。
As for me, I like Japanese. (topic "I" frames the sentence; が marks the object of 好き.)
Breakdown
この町(まち)は静(しず)かではありません。
As for this town, it is not quiet. (illustrates は marking the topic before a predicate.)
Breakdown
⚠️ Often confused with
〜が〜です
Subject marker が
Marks the grammatical subject — usually new or emphasized information. Identifies "which o...