是不是

Revision: I'm wondering if my boyfriend is serious about me.

我不知道我男朋友对我的感情是不是真的。

This is willcontinuing investigation ,like we said we don't know if the guy manufacture the ricin or not.

调查会一直继续，像我们所说，我们还不知道毒药是不是出自此人之手。

I don't know if I want to get decked out for the night and have to ride a bicycle in high heels.

我不知道我是不是想晚上打扮得美美的，然后穿着高跟鞋踩脚踏车出去。

I don't know whether it is a right or wrong choice.

我也不知道这是不是一个正确的选择。

I don't know if I'm doing the right thing speaking out.

我不知道我说出来是不是对的。

When, however, Ustinov is asked if he minds being saddled with the dread tag of "Renaissance Man", he is as ready as ever with a sharp riposte-"I didn't think I was as old as that!"

但是，当有人问他是不是不喜欢套上"多才多艺的人"这样一个令人敬畏的招牌时，他像往常一样立即机敏地答道："我从前可没想到自己有那么的古老。"

Are you on a riverbank with no way to get to the other side?

你是不是觉得自己身处一个到不了对岸的河堤旁？

I don't kown if professor has a roll call.

我不知道教授是不是已经点了名？

I don't konw is the professor make a roll call?

我不知道教授是不是已经点了名？

I don't known,whether rollcall the name ?

我不知道教授是不是已经点了名？

It seems likely that Kraft will return with a better offer.

看起来卡夫要重新考虑一个更好的出价了。

But he'd rather burn off my feelers and watch me squirm.

可他却放任那个家伙对我为所欲为！