whether or

基本解釋

Many have begun it. I do not yet know whether or not they kept to it.
許多人都有開始在研究，但至於他們是否能夠堅(jiān)持下去，卻非我預(yù)料所及的了。
But I do think it is time to reevaluate the things I do have and whether or not they add any value to my existence.
但是我的確認(rèn)爲(wèi)是時(shí)候去從新評(píng)估這些我所擁有的物品的價(jià)值了，看看它們是否因爲(wèi)我的收藏而增值。
You should know your team well enough to know whether or not something like that would be positive reinforcement for them.
你必須對(duì)自己的團(tuán)隊(duì)有很好的了解，要弄清楚對(duì)於他們來說類似的東西是否真的可以起到正曏強(qiáng)化的作用。

"We have no choice," he said, "as to whether or not we will play a great part in the world.
We can't help understanding. We always already understand, which has nothing to do again with whether or not we're right or wrong.
我們控制不住地去理解，我們縂是已經(jīng)理解了，這與對(duì)錯(cuò)無關(guān)。
耶魯公開課 - 文學(xué)理論導(dǎo)論課程節(jié)選
So can be changed slightly, depending on tense, past, present or future as well as whether or not you want to ask a question.
因此這個(gè)句型要根據(jù)不同的時(shí)態(tài)，如過去時(shí)、現(xiàn)在時(shí)和將來時(shí)，作出一點(diǎn)調(diào)整；另外也會(huì)根據(jù)是否是問句而略有不同。
There is 課堂 - SpeakingMax英語口語達(dá)人

The evidence is not clear on whether or not splitting the role actually helps shareholder value.
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