ashita wa muri desu.

topic particle

Breakdown of ashita wa muri desu.

• です: to be
• 明日あした: tomorrow
• 無理むり: impossible

Questions & Answers about ashita wa muri desu.

What does the particle は do in 明日は無理です?

は marks the topic: “As for tomorrow…”. It frames the conversation around tomorrow, with the implied subject (often “I/we”) understood from context. So it means “As for tomorrow, it’s not feasible.”

Where is the subject “I/we” in this sentence?

It’s omitted, which is normal in Japanese when context makes it obvious. 明日は無理です is understood as “As for tomorrow, (I/we) can’t do it.”

Why is the particle は pronounced wa here?

When は is the topic particle, it’s pronounced wa (historical spelling). When it’s part of a word like はな (hana), it’s pronounced ha. In 明日は, it’s the particle, so say ashita wa.

Should I use に with 明日? Why not 明日に無理です?

Time expressions often appear without に when they’re adverbial or topicalized. 明日に無理です is ungrammatical. Use:

• 明日は無理です (As for tomorrow, impossible)
• For “by tomorrow,” use 明日には無理です (not possible by tomorrow)
• To move something to tomorrow: 明日にします / 明日に延ばしましょう