Today we’ll organize the two uses of the adverbial particle 「は」 — “topic は” and “contrastive は.”
To get straight to the point: topic は is often omitted, while contrastive は is basically never omitted.
Part 1: Topic は
A topic is what you’re currently talking about — something already shared between the speaker and listener. When は is used to mark a topic, it is frequently dropped in conversation. This is an important point.
When “私は～です” Goes Unsaid
Textbooks teach self-introductions like:
私はルナピエナです。
わたしはるなぴえなです。(Hiragana)
Watashi wa Runa Piena desu. (Romaji)
I am Luna Piena. (English)
But in real conversation, since the topic is obvious — everyone is already looking at the person who is about to speak — it often works perfectly well to simply say:
〜です。よろしくお願いします。
〜です。よろしくおねがいします。(Hiragana)
～ desu. Yoroshiku onegai shimasu. (Romaji) (I am)
～. Nice to meet you. (English)
When the topic is self-evident, Japanese omits it. That’s the nature of the language.
が vs. は in Self-Introductions
These two sentences have different roles:
私はルナピエナです。
わたしはるなぴえなです。(Hiragana)
Watashi wa Runa Piena desu. (Romaji)
I am Luna Piena. (English)
私がルナピエナです。
わたしがるなぴえなです。(Hiragana)
Watashi ga Runa Piena desu. (Romaji)
I am Luna Piena. (English)
If someone asks 「誰がルナピエナですか？」(“Who is Luna Piena?”) and the listener doesn’t know the answer, you respond with が — because who is the focus, not the topic. When attention is already on the speaker (as at the start of a self-introduction), topic は can be used — but it is easily dropped.
More Examples of Topic Omission
Example 1:
「誰がケーキを食べたんだ？」
だれがケーキをたべたんだ？(Hiragana)
Dare ga kēki o tabeta n da? (Romaji)
Who ate the cake? (English)
「ラウラさんが食べたみたいです。」
らうらさんがたべたみたいです。(Hiragana)
Raura-san ga tabeta mitai desu. (Romaji)
It seems Laura ate it. (English)
This could naturally be followed by:
（ラウラは）いつもケーキばっかり食べてるんだよ。
（らうらは）いつもケーキばっかりたべてるんだよ。(Hiragana)
(Raura wa) itsumo kēki bakka tabeteru n da yo. (Romaji)
(Laura) always eats nothing but cake. (English)
Here, 「ラウラは」 is the topic, but in everyday conversation it is commonly dropped.
Example 2 — Textbook style vs. natural conversation:
Textbook:
「あなたはケーキを食べますか？」
「はい、私はそれを食べます。」
「あなたはケーキをたべますか？」
「はい、わたしはそれをたべます。(Hiragana)
Anata wa kēki o tabemasu ka?
Hai, watashi wa sore o tabemasu. (Romaji)
Do you eat cake? / Yes, I eat it. (English)
Natural conversation:
「ケーキ食べる？」「うん、食べる。」
ケーキたべる？/うん、たべる。(Hiragana)
Kēki taberu? / Un, taberu. (Romaji)
Want some cake? / Yeah, I’ll have some. (English)
Both the topic and the object are dropped — because they’re already understood. Leaving out what is already known is a defining feature of Japanese.
Part 2: Contrastive は
Contrastive は sets something apart from others — it highlights one element against an implied alternative. It corresponds to the idea of “others don’t, but I do” or “I don’t elsewhere, but here I do.” Because it creates a line of contrast, this は cannot be omitted — removing it would erase the contrast entirely.
Example:
「どこで飲みますか？」
どこでのみますか？(Hiragana)
Doko de nomimasu ka? (Romaji)
Where do you drink? (English)
「家で飲みます。」
いえでのみます。(Hiragana)
Ie de nomimasu. (Romaji)
I drink at home. (English)
This is a neutral answer. But if you say:
「家では飲みます。」
いえではのみます。(Hiragana)
Ie de wa nomimasu. (Romaji)
At home, I do drink (implying: but not elsewhere). (English)
…the は introduces contrast — “I don’t drink outside, but at home I do.” This は cannot be dropped.
The Relationship Between Questions and Topics
The question:
「誰が飲みますか？」
だれがのみますか？(Hiragana)
Dare ga nomimasu ka? (Romaji)
Who will drink (it)? (English)
…often has a hidden topic. The full version would be:
「（このコーヒーは）誰が飲みますか？」
（このコーヒーは）だれがのみますか？(Hiragana)
(Kono kōhī wa) dare ga nomimasu ka? (Romaji)
(As for this coffee,) who will drink it? (English)
And the answer:
「（このコーヒーは）私が飲みます。」
（このコーヒーは）わたしがのみます。(Hiragana)
(Kono kōhī wa) watashi ga nomimasu. (Romaji)
(As for this coffee,) I’ll drink it. (English)
Topic and contrastive は can also overlap in the same sentence:
「（コーヒーは）家では飲みます。」
（コーヒーは）いえではのみます。(Hiragana)
(Kōhī wa) ie de wa nomimasu. (Romaji)
(As for coffee,) I do drink it at home (but not elsewhere). (English)
The topic 「コーヒーは」 at the front tends to drop in conversation, but the contrastive 「では」 cannot be dropped. The reason even the subject can disappear from the surface is that Japanese omits what is already understood.
Another Conversation Pattern
「（ラウラは）これから何する？」
「（らうらは）これからなにする？」(Hiragana)
(Raura wa) korekara nani suru? (Romaji)
(Laura,) what are you doing next? (English)
「（私は）カラオケにでも行くよ。」
「（わたしは）カラオケにでもいくよ。」(Hiragana)
(Watashi wa) karaoke ni demo iku yo. (Romaji)
(I’m) going to karaoke or something. (English)
Grammatically, both 「ラウラは」 and 「私は」 can be included, but in spoken Japanese both tend to be omitted. The topic is created by context.
When Two は Appear in One Sentence
私はコーヒーは飲みます。
わたしはコーヒーはのみます。(Hiragana)
Watashi wa kōhī wa nomimasu. (Romaji)
As for me, coffee I do drink (but not other drinks). (English)
- 「私は」= topic は
- 「コーヒーは」= contrastive は (I don’t drink other things, but coffee I do)
The reversed order is also possible:
コーヒーは私は飲みます。
コーヒーはわたしはのみます。(Hiragana)
Kōhī wa watashi wa nomimasu. (Romaji)
As for coffee, I drink it. (English)
…but it’s more natural to place the topic first. When multiple は appear, the first is generally the topic and the next is contrastive.
Movement Expressions
「誰が日本へ行きますか。」―「私が行きます。」
だれがにほんへいきますか。／わたしがいきます。(Hiragana)
Dare ga Nihon e ikimasu ka. / Watashi ga ikimasu. (Romaji)
Who is going to Japan? / I am going. (English) (Focus is on “who”)
「日本へ行きますか。」―「はい、行きます。」
「にほんへいきますか。」/「はい、いきます。」(Hiragana)
Nihon e ikimasu ka. / Hai, ikimasu. (Romaji)
Are you going to Japan? / Yes, I am. (English) (Topic depends on conversational context)
「日本へは行きますか。」―「はい、行きます。」
「にほんへはいきますか。」/ 「はい、いきます。」(Hiragana)
Nihon e wa ikimasu ka. / Hai, ikimasu. (Romaji)
To Japan specifically, are you going? / Yes, I am. (English) (Contrast: “I may not go elsewhere, but to Japan I will go”)
In compound particles like 「へは」 and 「には」, the contrastive は is retained and cannot be dropped.
The 好き(suki) Pattern
私はピザが好きだ。
わたしはピザがすきだ。(Hiragana)
Watashi wa piza ga suki da. (Romaji)
I like pizza. (English)
→ (Neutral statement — topic は)
私がピザが好きだ。
わたしがピザがすきだ。(Hiragana)
Watashi ga piza ga suki da. (Romaji)
I am the one who likes pizza. (English)
→ (Focus on “who” — requires context)
ピザは私が好きだ。
ピザはわたしがすきだ。(Hiragana)
Piza wa watashi ga suki da. (Romaji)
Pizza — I’m the one who likes it (not others). (English)
→ (Contrast: not others, but me)
私はピザは好きだ。
わたしはピザはすきだ。(Hiragana)
Watashi wa piza wa suki da. (Romaji)
As for me, pizza I do like (but other foods, maybe not). (English)
→ (Topic は + contrastive は)
The finer points of these patterns will be covered in detail in a separate lesson.
Summary
は has two functions:
| Function | Description | Can be omitted? |
|---|---|---|
| Topic は | Picks up a topic already shared in the conversation | ✅ Yes |
| Contrastive は | Draws a distinction or contrast against something else | ❌ No |
When multiple は appear in one sentence, the first は is generally the topic and the next is contrastive.
Review Check
Can you identify what is omitted and which は is topic vs. contrastive in the following?
「（あなたは）（このコーヒーを）どこで飲みますか？」
「（あなたは）（このコーヒーを）どこでのみますか？」(Hiragana)
(Anata wa) (kono kōhī o) doko de nomimasu ka? (Romaji)
(As for you,) where do you drink (this coffee)? (English)
「（私は）（このコーヒーを）家では飲みます。」
「（わたしは）（このコーヒーを）いえではのみます。」(Hiragana)
(Watashi wa) (kono kōhī o) ie de wa nomimasu. (Romaji)
(As for me,) I drink (this coffee) at home (but not elsewhere). (English)
The topic は drops according to context. The contrastive は does not drop.
Master this distinction and your use of は will reach a practical, natural level.