16 and no mistake; beyond doubt; beyond question; no doubt, out of question; without doubt; without question

● 本组词组一般可译为“毫无疑问”之意，作状语，用法不完全一样。

● and no mistake是口语用语，多放在句末，表示强烈的肯定。如：The plot is complicated and no mistake.（无疑，小说情节复杂。）Mary Ann was mad, and no mistake.（玛丽·安生气了，没错。）I was properly scared and no mistake when the bull began to move towards me.（那头牛开始向我冲过来时，我可真是吓坏了。）You’re looking well—and no mistake.（你看起来气色很好—确实如此。）

● beyond doubt, no doubt和without doubt意思差不多，可互换，有时doubt前可加a，几个词组均可作状语、表语等。如：That was all been proved beyond a doubt.（那件事情无疑已完全证明。）Beyond doubt, they will arrive tomorrow.（他们明天一定到。）He is beyond doubt the smartest boy in the class.（毫无疑问，他是班上最聪明的男生。）There is no doubt that he will come.（无疑，他会来。）It is no doubt difficult, but we’ll try to finish it at any cost.（当然，这是很困难的，但我们将不惜一切代价将它完成。）The court will no doubt deal severely with the criminals.（毫无疑问，法庭会严厉惩处这些罪犯的。）Without doubt, investigation will lead us to correct conclusions.（毫无疑问，调查会使我们得出正确的结论。）She said the past year was without doubt “a difficult year”, for the world.（她说，过去的一年对这个世界来说，无疑是“困难的一年”。）Without a doubt these theories were all wrong.（毫无疑问，这些理论都是错误的。）

● beyond question, out of question, without question含义与用法差不多，可以互换。多作状语，常置于句首，question前无冠词，后无s。如：Beyond question, it was the coldest day of this winter.（无疑，那天是今冬最冷的一天。）She is beyond question the cleverest girl in the family.（她无疑是家里最聪明的女孩。）People always believe anything that Mark says; his honesty is beyond question.（马克思说的话人们都相信，因为他的诚实是无可置疑的。）Out of question, this plan can be fulfilled ahead of time.（毫无疑问，这个计划可以提前完成。）This is, out of question, an important principle that applies to all machines.（毫无疑问，这是适合于一切机械的一条重要原理。）It’s out of question that he will be appointed chief engineer of the railway.（毫无疑问，他将被任命为那条铁路的总工程师。）They allowed our claim without question.（他们毫无疑问地认可了我们的要求。）He is, without question, the best man for the job.（当然，他是干这个工作最合适的人。）You can’t possibly think Sheila took your watch; her honesty is without question.（你不会想到希拉拿走你的表，她的诚实是毫无疑问的。）