と思う means I think that. It is a JLPT N4 Japanese grammar pattern used to state a personal opinion or belief.
You will see it constantly in conversation, textbooks, and the JLPT N4 test. Learning it early makes your Japanese sound more natural when you want to share what you believe or expect.
What does と思う mean?
Use と思う when you want to express I think that in a Japanese sentence.
Natural translations include:
- I think that
- I believe that
- It seems to me that
Try to notice the speaker’s purpose first, then choose the English phrase that fits that context.
How to form と思う
と思う attaches to the plain form of whatever you are thinking.
- Verb (plain form) + と思う
- い-adjective + と思う
- な-adjective + だ + と思う
- Noun + だ + と思う
In polite speech, 思う becomes 思います.
Common shapes from the example sentences:
- 雨だと思います
- 面白いと思います
- 来ないと思います
When is と思う used?
Use と思う in situations like:
- reading or writing JLPT N4-level sentences
- making a sentence more precise than a basic N5 pattern
- recognizing natural grammar in conversation or short passages
Tone and register:
- neutral; usable in both casual and polite conversation
- extremely common in JLPT N4 grammar study and everyday Japanese
と思う example sentences
After reading each sentence, ask what job と思う is doing: it wraps the speaker’s inner thought and presents it as a personal belief.
Nuance of と思う
The key nuance is that と思う quotes your own thought. It turns a statement into a personal belief rather than an objective fact.
A pattern may look simple, but it signals that the speaker is offering an opinion, not declaring a certainty.
For example, saying 雨だ implies certainty. Saying 雨だと思う softens it into a personal expectation. The difference is social, not just grammatical: you are marking the boundary between fact and belief.
と思う vs でしょう
Both と思う and でしょう can express uncertainty, but they do different jobs.
Is the speaker stating a private opinion, or making a guess based on evidence? と思う keeps the focus on the speaker’s mind; でしょう keeps the focus on the situation.
Common mistakes with と思う
Is と思う on the JLPT?
Yes. と思う is commonly taught as JLPT N4 grammar.
- Recognize it in reading and listening
- Understand the difference between a stated fact and a quoted thought
- Use it in simple original sentences
Practice questions for と思う
Learning path for と思う
Use と思う as part of your JLPT N4 quotation, thought, and definition grammar toolkit. Practice the quoted or defined content before と思う. These patterns depend on where the thought, question, name, or explanation begins and ends, so sentence boundaries matter more than a single English gloss.
Related grammar to review next
Learn と思う with Hane
If you want to review と思う together with the related patterns above, Hane helps you practice Japanese in short, focused sessions.
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FAQ about と思う
What does と思う (to omou) mean in Japanese?
と思う (to omou) means “I think that”. It is JLPT N4 grammar. Use と思う when you want to express I think that in a Japanese sentence.
How do you form と思う (to omou)?
と思う attaches to the plain form of whatever you are thinking. Plain form + と思う Verb (plain form) + と思う い-adjective + と思う な-adjective + だ + と思う Noun + だ + と思う In polite speech, 思う becomes 思います.
What is the difference between と思う and でしょう?
と思う: Personal belief. でしょう: Conjecture or expectation.
What is an example sentence with と思う (to omou)?
明日は雨だと思います。 — I think it will rain tomorrow.