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“I think” in Japanese using 〜と思います (~to omoimasu).

The subject of the sentence (the speaker) is often omitted. In other words, you don’t need to say “I” think, because it is obvious from the context.

In the case that the subject is not “I” you must use 〜と思っています (to omotteimasu) instead of 〜と思います (~to omoimasu) because it is expressing what another person (might be) thinking.

明日は休みです (ashita wa yasumi desu) means “tomorrow is a holiday.”
The plain form of the sentence is 明日は休みだ (ashita wa yasumi da). The second step is to add 〜と思います (~to omoimasu) to the end of the sentence. The result is an “I think” statement: 明日は休みだと思います (Ashita wa yasumi da to omoimasu) – I think tomorrow is a holiday.

明日は休みだと思います。
ashita wa yasumi da to omoimasu.
I think tomorrow is a holiday.

明日は休みではないと思います。
ashita wa yasumi da to omoimasu.
I think tomorrow is not a holiday.

昨日は休みだったと思います。
kinou wa yasumi datta to omoimasu.
I think yesterday was a holiday.

昨日は休みではなかったと思います。
kinou wa yasumi dewa nakatta to omoimasu.
I think yesterday was not a holiday.

先生はとても親切です (sensei wa totemo shinsetsu desu) means “My teacher is very kind.” To change to an “I think” statement, first change です (desu) to だ (da). The result is an “I think” statement: 先生はとても親切だと思います (Sensei wa totemo shinsetsu da to omoimasu) – I think my teacher is very kind.

先生は親切だと思います。
Sensei wa shinsetsu da to omoimasu
I think my teacher is kind.

先生は親切ではない思います。
Sensei wa shinsetsu dewanai to omoimasu
I think my teacher is not kind.

昨日彼は元気だったと思います。
kinou kare wa genki datta to omoimasu.
I think he was fine yesterday.

昨日彼は元気ではなかったと思います。
kinou kare wa genki dewanakatta to omoimasu.
I think he was not fine yesterday.


猫は可愛いです (neko wa kawaii desu) means “Cats are cute.” The result is an “I think” statement: 猫は可愛いと思います (Neko wa kawaii to omoimasu) – I think cats are cute.

猫は可愛いと思います。
Neko wa kawaii to omoimasu
I think cats are cute.

猫は可愛くないと思います。
Neko wa kawaikunai to omoimasu
I think cats are not cute.

昨日は寒かったと思います。 
kinou wa samukatta to omoimasu
I think yesterday was cold.

昨日は寒くなかったと思います。 
kinou wa samukunakatta to omoimasu
I think yesterday was not cold.

今日は雨が降ると思います。
kyou wa ame ga furu to omoimasu.
I think it will rain today

彼はうちにいると思います。
kare wa uchi ni iru to omoimasu.
I think he is at home.

彼はお金が無いと思います。
kare wa okane ga nai to omoimasu
I think he doesn't have money

彼女は東京へ行ったと思います。
kanojyo wa tokyo e itta to omoimasu.
I think she went to Tokyo.

彼女は昨日ここに来なかったと思います。
kanojyo wa kinou koko ni konakatta to omoimasu.
I think she didn't come here yesterday.

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