About yet

[compiler]

More recently, a naturally occurring flavonoid withanti-oxidant and anti-inflammatory properties (such as quercetin) has been used in disease. Its success is yet to be confirmed.

Should the last sentence be written Its success is NOT yet to be confirmed? When yet is used, should the not be used or not and why? Thank you for your answer.

 

[Raymott]

"Success is yet to be confirmed" means "Success hasn't been confirmed yet", "Success is not yet confirmed", "Success it still to be confirmed".
"Success is not yet to be confirmed" is a strange sentence which would mean, "It's not time to confirm success", "We have made no plans to confirm success any time soon".

 

[Tdol]

has been used in disease

I'd use something like has been used in treating disease. Also, Given that quercetin is an example of a flavonoid being used, should it be flavonoids and their success? If quercetin is the only one being tested, then such as is incorrect.

 

[compiler]

So the word yet has already had a negative meaning. Is it correct? If so, which one is correct, he has not known it yet, he has known it yet or he has yet known it?

 

[SoothingDave]

Its success is yet to be confirmed = its success has not yet been confirmed.

 

[Raymott]

So the word yet has already had a negative meaning. Is it correct? If so, which one is correct, he has not known it yet, he has known it yet or he has yet known it?

"He has yet to find out" means that he hasn't found out yet.
We don't use 'know' to mean "come to know". You can use "find out, discover". None of your sentences, therefore, are right.

 

[compiler]

"He has yet to find out" means that he hasn't found out yet.
We don't use 'know' to mean "come to know". You can use "find out, discover". None of your sentences, therefore, are right.

The yet has already had negative meaning. Is it correct? Following your example, we cannot say he has NOT found out yet, right?

 

[SoothingDave]

Wrong. "Yet" does not always have a "negative meaning." It depends upon the position. See my earlier post #5.

He has yet to find out = He has not found out yet.

 

[Raymott]

Following your example, we cannot say he has NOT found out yet, right?

Howso? I just wrote, and you have quoted, "He has yet to find out" means that he hasn't found out yet."

 

[compiler]

Howso? I just wrote, and you have quoted, "He has yet to find out" means that he hasn't found out yet."

So, yet does have a negative meaning. Yet means has not, right? In your example, he has yet to find out = he has not yet found out = he has not found out so far. Is it correct?

 

[bhaisahab]

No, not right. It depends on the context.

 

[Raymott]

So, yet does have a negative meaning. Yet means has not, right?

You could say that it has a negative meaning in that sentence, if that helps you understand it. But as Dave has told you, 'yet' is not a negative word per se.
PS: And you certainly can't take the differing elements out of two sentences that mean the same and claim that therefore the elements mean the same, as you have done.

 

[compiler]

I have to study yet used to imply the negative meaning. There is one case that yet is often used to imply the negative of a following infinitive such as have yet to win a game. Thus, yet + infinitive implies a negative meaning.

 

[Raymott]

Thus, yet + infinitive implies a negative meaning.

Yes, that's a fair statement, unless someone else can think of an exception.

 

[MikeNewYork]

I have yet to cash in my winning lottery ticket. Nothing negative there.

 

[Raymott]

I have yet to cash in my winning lottery ticket. Nothing negative there.

Of course there is. "yet to cash in" means "haven't cashed in" in the sense that the OP understands it. We are obviously talking about negativity in a grammatical sense. "I can't avoid attracting money, power, fame, and women" is a negative statement, grammatically.
The challenge is the find an example where "yet to do it" doesn't mean "has not done it".
In the absence of such an example, compiler is correct is saying "yet + infinitive implies a negative meaning". I'm pretty sure you understand that.

PS:
yet
1. used in negative sentencesYou use yet in negative sentences to say that something has not happened up to the present time, although it probably will happen. In conversation and in less formal writing, you usually put yet at the end of a clause.

It isn't dark yet.
http://www.thefreedictionary.com/yet

"It isn't dark yet" is a negative sentence, even if you like the daytime.

 

[Raymott]

Or perhaps I missed an attempt at a joke.

 

[compiler]

I have yet to cash in my winning lottery ticket. Nothing negative there.

LOL, you did say you have NOT cashed in your winning lottery ticket, didn't you? Can I have it?

 

[MikeNewYork]

In a word, no. That would be a real negative. :lol:

 

[compiler]

That’s right, the latest Macy’s One Day Sale was Saturday, May 10, 2014 (with a preview day on Friday, May 9, 2014), and the Macys One Day Sale for June has yet to be announced just yet, but you can still save big with the latest Macy’s Sale.

Can anyone explain what the second yet in the sentence mean and why it is used?