是否

I've been wondering if you yourselves have any idea why she came.

我一直在想，你们自己是否知道她为什么来。

The key issue was whether the four defendants acted dishonestly.

关键问题是4名被告是否存在欺诈行为。

It is premature to speculate about the resumption of negotiations.

现在猜测谈判是否会重新开始还为时过早。

Does such an attitudinal change reflect real experiences in daily life?

人生观的这种转变是否反映了日常生活中的真实遭遇？

Someone comes in every day to check all is in order.

每天都有人来检查是否一切都井然有序。

Whether such properties are a good deal will depend on individual situations.

这样的地产是否可获得大笔收益还要视具体情形而定。

At first I really didn'tcare whether he came or not.

起先我真的不在乎他是否会来。

But legal experts are not sure if such a charge can stick.

但法律专家们不能肯定这一指控是否成立。

Was it just a temporary blip on an otherwise healthy growth curve?

这是否是原本良好的增长曲线中暂时的偏离？

I don't know if you ever read any of his books.

我不知道你是否读过他写的书。

Were you surprised that his disease progressed so quickly?

他的病情发展得这么快，您是否感到意外？

The jury is out on whether or not this is true.

这是否属实仍未得出定论。

It was touch and go whether we'd go bankrupt.

我们是否会破产还很难说。

It remains to be seen whether her parliamentary colleagues will agree.

她的国会同僚是否同意，现在还无从知晓。

It is questionable whether the expenditure on this project is really justified.

该项目的开支是否真的合理还未可知。