不知道

He was unaware that I was present.

他不知道在场。

He does not know what nerves are.

他不知道什么叫害怕。

They were unaware that war was near.

他不知道战争即将爆发。

The where and when are not known.

地点和时间都不知道。

She hadn't the wit to say no.

她不知道如何人。

I am perplexed to know what to do.

不知道怎么做才好。

None of the pupils knew the answer.

学生中谁都不知道答案。

I don't know whom to give it to.

不知道把给谁。

I haven’t a clue how to get there.

根本不知道怎么去那里。

She remained in blissful ignorance of these events.

她有幸一直不知道这些事情。

We are in complete ignorance of his plans.

全不知道他的计划。

I don't know what profession would suit me.

不知道什么职业适合干。

I have mislaid my key to the door.

不知道把门钥匙放到哪里了。

I'm not sure about rhyming perestroika with balalaika.

不知道perestroika是否与balalaika押韵。

They are uncertain about what to do next.

他不知道下一步该做什么。

I don't know the cause of his abrupt leave.

不知道他突然离去的原因。

He hasn't the least foreknowledge of this matter.

关于此事他事先一点也不知道。

I don't know he was a gay person.

不知道他是同性恋者。

I don't know what all the fuss is about.

不知道这样大惊小怪是为了什么。

I don’t know all the ins and outs of the case.

不知道这个案子的是非曲折。