だろうと思う

I think … will

→ だ
phrase Rare #21,615
I think … will Expresses the speaker’s belief that something is likely. The part before だろう can also refer to a past or hypothetical situation.
JA: 彼は明日来るだろうと思う。
EN: I think he’ll come tomorrow.

私は結局、損はしないだろうと思う。

I think I probably won't end up losing anything.

私ならそう言っただろうと思う。

I think I would have said that.

あのドレスのスタイルは、来年も見られるだろうと思う。

I think we'll still be seeing that dress style next year.

彼女は難なく試験に通るだろうと思う。

I think she’ll pass the exam with ease.

明日は雨が降るだろうと思う。

I think it will rain tomorrow.

私たちは通常、列車は時間どおりに到着するだろうと思う。

We usually think that the train will arrive on time.

彼はいつか金持ちになるだろうと思う。

I think he’ll be rich someday.

彼らは僕の意見を支持してくれないだろうと思う。

I don't think they'll support my opinion.