は知らないと思うよ

I don't think [someone] knows

→ は

phrase Rare #31,808

I don't think [someone] knows A conversational way to say that you think someone is unaware of something. The person or topic comes before は, and the information they probably do not know comes before 知らないと思うよ.

JA: その店がもう閉まっていること、彼は知らないと思うよ。

EN: I don't think he knows that the store is already closed.

トムはメアリーがベジタリアンだとは知らないと思うよ。

I don't think Tom knows that Mary is a vegetarian.

メアリーがやったってこと、トムは知らないと思うよ。

I don't think Tom knows that Mary did it.

僕らがここにいるって、トムは知らないと思うよ。

I don't think Tom knows we're here.

メアリーがボストンからいつ戻ったのか、トムは知らないと思うよ。

I don't think Tom knows when Mary got back from Boston.

メアリーが入院してること、トムは知らないと思うよ。

I don't think Tom knows that Mary is in the hospital.

僕がメアリーの兄弟だってこと、トムは知らないと思うよ。

I don't think Tom knows that I'm Mary's brother.