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Usage of by vs. until in negative sentences... any known rules?

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El Torito - 20 Dec 2005 17:23 GMT
Hi everybody,

I've been making an ESL lesson focusing on the usage of the preposition
by vs. until.

So far I could come up with an easily understandable rule for positive
sentences:
- Until is used for repetitive or continuous actions and states (I'll
go to school until the end of the year; I'll wait until 5pm; I'll be at
the office until 6.)
- By is used for discrete actions (one time actions) (I'll come back by
8)

So far so good, this works fairly enough.

But I'm running into real problems to find out a rule for negative
sentences, and after consulting 200 grammar books, I just can't find
anything on that!
At first, I wanted to say that negatives are continuous actions or
states, hence they need to use until (He won't call until the end of
the camp, He won't be back until 4).
But I do find cases where I can use by as well as until (he won't be
back by 4).

But in this case, the meaning differs, the only explanation I could
think of, was that when "until" is used in a negative sentence, it
implies that the action will take place right after (He won't be back
until 4 = He will be back at 4, I won't work until Thursday = I'll
start working on Friday (or Thursday?)), while when "by" is used, then
it means that the action can not take place before the stated time and
does not imply this action will take place anytime soon afterwards -
unlike with "until" (he won't be back by 4 = He won't be able to be
back before 4 and God only knows when he'll be back)

It seemed all right until I came up with some examples that just don't
fit in that explanation:
"I won't work until the age of 65" implies that I am working and that
I'll stop before I'm 65, say 60. It doesn't mean I am on holiday until
I am 65 and then I'll start working!!!

I could come up with many more examples like that. Also I can not find
any explanation why some verbs can be used with "by" and "until" in
negative sentences, while others can not (! I won't watch TV by 4...)
or need the future progressive ( I won't be watching TV by 4 - ??? I'm
not even sure if this makes sense anymore :-)

Well if you can help me on that, I'd appreciate.

Thanks
Chris Waigl - 20 Dec 2005 18:55 GMT
I'm not quite sure how much to snip...

> I've been making an ESL lesson focusing on the usage of the
> preposition by vs. until.
[quoted text clipped - 8 lines]
>
> So far so good, this works fairly enough.

First of all, I'm not at all fond of classifying verbs as "state" and
"action verbs". In my view, this is an intellectual exercise that
yields very little profit for the students. Admittedly, I'm
influenced by the fact that I never really understood the
distinction: not at the age of twelve, not now.[1]

Second, contrasting "until" and "by" looks rather unnatural to me.
"By" is often used in contrast with "at" (for what you call "discrete
actions"). "By" can be loosely paraphrased, and more importantly
introduced, as "at X at the latest" or "at X or earlier". Obviously,
if all the students have the same native language, and these various
adverbials somehow match up with how the prepositions work in this
native language, it might make sense to match things up differently.

> But I'm running into real problems to find out a rule for negative
> sentences, and after consulting 200 grammar books, I just can't find
[quoted text clipped - 13 lines]
> place anytime soon afterwards - unlike with "until" (he won't be
> back by 4 back before 4 and God only knows when he'll be back)

I have a problem understanding you here.

As for some of your examples, you are neglecting the scope of the
negation:

- I won't work until the age of 65.
- I won't be back until 4 o'clock.

Try shifting the PP around:

- *Until the age of 65, I won't work. (The sense isn't preserved.)
- Until 4 o'clock, I won't be back. (Awkward, but the sense is
preserved).

In the first case, the negation applies to the full predicative "work
until the age of 65": that's what I won't do. In the second, only to
"be back", which is what I won't "do" ... "until 4 o'clock", i.e. I
will be back some time after 4.

So instead of working out some complex rule system no one has the
time or brain power to check when choosing between "by", "until" and
"at", why not paraphrase a few example sentences?

In addition, it seems to me that sentences like "He won't be back by
4 o'clock" need a very specific context to appear at all: there's an
expectation, or some external need, for "him" to be back by a
particular time: "We'll have to leave by 4 p.m. if we want to catch
the movie at 5. / Yes, but Jim won't be back by 4, what do we do
about him?"

> I could come up with many more examples like that. Also I can not
> find any explanation why some verbs can be used with "by" and
> "until" in negative sentences, while others can not (! I won't
> watch TV by 4...) or need the future progressive ( I won't be
> watching TV by 4 - ??? I'm not even sure if this makes sense
> anymore :-)

This hinges on the meaning of "by". "I'll watch TV by 4 o'clock" is
also not particularly likely. Better with "be watching".

Chris Waigl

[1] If someone is shocked by this admission, let me rephrase that
into "the distinction has always left me unsatisfied".
El Torito - 27 Dec 2005 18:40 GMT
> Second, contrasting "until" and "by" looks rather unnatural to me.
> "By" is often used in contrast with "at" (for what you call "discrete
> actions").

Well, I've been told to draw up a lesson because the students (adult
Japanese) often confuse the two, so unfortunately, I don't have a
choice here...
They confuse the two mostly in positive sentences, but I have found
myself unable to clarify the different uses in negative sentences (and
I know somebody is going to bring that up so it's better to have an
explanation ready, just in case)

> As for some of your examples, you are neglecting the scope of the
> negation:

Yes thank you for that. I'll sure use that.

> So instead of working out some complex rule system no one has the
> time or brain power to check when choosing between "by", "until" and
> "at", why not paraphrase a few example sentences?

I'm afraid I cannot do that. We are teaching adults, they want to know
*why* this and *why not* that... The first part of the lessons is
always guided (they use cards so I can indeed choose the sentences they
will practice with) but for the second part they have to use their own
vocab... Hence the need to find a not too difficult rule on which to
rely on (that's what grammar is all about :-)... that works for most
cases...

> In addition, it seems to me that sentences like "He won't be back by
> 4 o'clock" need a very specific context to appear at all:

I know, but the "rule" on the negative is not primarly aimed to
students (unless someone comes up with a sentence and ask for an
explanation), but mainly at teachers: it's the reaction to the material
that we often have to take into account. And other teachers finding a
counter-example of the things they are supposed to teach is never a
good start. so it is a policy where I work to add "notes" in lesson
plans... the thing on the negative sentences is mainly for that, and
eventually for expansion or probably with an advice: don't venture in
there :-)
Purl Gurl - 27 Dec 2005 19:18 GMT
> > Second, contrasting "until" and "by" looks rather unnatural to me.
> > "By" is often used in contrast with "at" (for what you call "discrete
> > actions").

> Well, I've been told to draw up a lesson because the students (adult
> Japanese) often confuse the two, so unfortunately, I don't have a
> choice here...

> They confuse the two mostly in positive sentences, but I have found
> myself unable to clarify the different uses in negative sentences (and
> I know somebody is going to bring that up so it's better to have an
> explanation ready, just in case)

Here, some general guidelines.

Basic difference between "by," "until" and "at" is time of initiation of an event.
Note mine is _basic_ difference, which indicates "the most simple."

By: an event must complete no later than a set deadline.

Until: an event remains active to a deadline, then stops being active.

At: an event will initiate and possibly complete within a defined time frame.

Your "by" implies there is no set time for beginning an event, but
this event must be completed by a deadline.

"I don't care when you begin cleaning your room, just have your
room cleaned _by_ tonight."

Use of "until" indicates an event is taking place now, then will
stop upon reaching a deadline.

"You will clean your room _until_ I tell you to stop."

For "at" this is bit confusing, is not all that clear. An event
will begin upon a certain time, and may or may not stop.

"Today _at_ lunchtime, you will clean your room."

There are inherently lots of exceptions. Context rules meaning
of those words, like all words. What I exemplify is the typical,
but are not rules.

You might enjoy applying a Bertrand Russell paradox to this
which is based upon, "...sentences are entailed by a contradiction."

His paradox, understanding his paradox, might help you to explain
your "negative sentences" to students.

"Today _at_ lunchtime, you will clean your room."

Entailed contradiction is most clear for that example. If that statement
is true, he will _not_ be performing _other_ activities at lunchtime.

"Today _at_ lunchtime, you will _not_ do anything but clean your room."

Use of "at" can be challenging. Our "at" is a pointer. Often "at" is used
to show literal direction; "Throw the ball _at_ him."

Use of "...at lunchtime...." is also a pointer, but not a physical pointer
nor a directional pointer. This usage is a pointer to a future time reference.

AT: to point to a defined specific.

Consider sticking with basic meanings for student understanding. Later
introduce more complex meanings.

BY: an event is to be done no later than a deadline. ( to be )
UNTIL: do an event up to a deadline then stop.        ( is being )
AT: do an event upon reaching a defined time.         ( will be )

Again, mine are guidelines, not rules.

Purl Gurl
credoquaabsurdum - 21 Dec 2005 00:04 GMT
> Hi everybody,
>
[quoted text clipped - 45 lines]
>
> Thanks

> Hi everybody,
>
[quoted text clipped - 45 lines]
>
> Thanks

One of my pet peeves when reading these threads is that people rarely
bother to read the entire thread before they start answering, and thus
repeat or paraphrase what's already been said. Since you've
cross-posted to multiple groups, it would be almost impossible to check
out your answers all over the place. So someone somewhere has probably
already said this, but here goes.

Since I teach English in Greece, where a single preposition is
typically used in place of both "by" and "until," I have a pretty good
idea of the kinds of problems you're having in your ESL lesson.

You mentioned 200 grammar books, but the best-known international
guidelines for using "by" and "until" are probably the ones found in
_English Grammar in Use_ (Cambridge University Press, 3rd edition), by
Raymond Murphy. The North American edition is called _Grammar in Use_
(CUP, still in the second edition). If you don't have this book, you
should probably get your hands on it somehow.

Your negative and positive distinction has me baffled, and I think
that's where you've lost your way. Let's see if this explanation can
clear things up...it might not, but it's worth a shot.

----

"By," in the senses that can be confused with "until," announces a
DEADLINE, tells us that a situation must not continue later than a
specific time, e.g.:

This report had better by on my desk by 5:00.
If this report is not on my desk by 5:00, you might as well find
yourself another job.

(Same meaning in both affirmative/positive and negative senses.)

"Until" highlights the amount of time that is left BEFORE A DEADLINE,
to say or ask how long a situation continues, to say or ask how much
time is left before something happens.

You have until 5:00 to get this report on my desk. (Yes, the deadline
is 5:00, but the speaker wishes to give the listener permission to
submit the report at 5.)

A: "Damn! I've forgotten when the concert is! Let's leave now!"
B: "Don't worry. It doesn't start until 3."

(Same meaning in both affirmative/positive and negative senses.)

So, as Murphy puts it in Unit 120 of EGIU: "something continues UNTIL a
time in the future, but something happens BY a time in the future."

Other example sentences, courtesy of Murphy:

I sent the letter to them today, so they should receive it BY MONDAY. (
= on or before Monday, not later than Monday)

I couldn't get up this morning. I stayed in bed until half past ten.

---

We might also head over to a nice little book called _Oxford Guide to
English Grammar_, by John Eastwood (OUP). Section 227.6 reads as
follows:

a We use till/until to say when something finishes.
Jim will be working in Germany till/until next April.
We sat in the pub till/until closing-time.

(Note omitted: irrelevant to this discussion.)

b We can use not...till/until when something is later than expected.
Sue didn't get up till/untill half past ten.

c By means "not later than"
I'm always up by eight o'clock. ( = at eight or earlier)
Can you pay me back by Friday ( = on Friday or earlier)
They should have replied to my letter by now.

---

Finally, one of the things that's hindering you in your search for
meaning is that in your explanation sentence for "until" in the
negative sense (I won't work until the age of 65.) can indeed be taken
to mean that you won't start working until you hit 65. It's your
primary meaning that's dialect (usually in American English).

(Fowler's Modern English Usage (3rd edition) makes that clear. Concise
Oxford (11th edition) Webster's Dictionary of English Usage makes no
mention of it, Merriam-Webster's Collegiate (11th edition) does not
accept it as a meaning of "until," The Chicago Manual of Style (15th
edition) says nothing on the subject.)

This is why, as Chris pointed out (2nd message in this thread),
switching around the word order murders the meaning you're trying to
get across.

However, not to praise Chris's message overmuch: if you're working in a
foreign country and your students are less than highly motivated and at
a certain ago of dissent (say, older than 13), well, in my opinion...

They are unlikely to attempt to assimilate meaning from example
sentences without explanations, form internal rules automatically, or
do anything other than stare blankly at such boardwork and think behind
the mask: "I hate you! I hate English! I hate your sentences and you
can stick them where the sun don't shine, because the only reason
you're putting them up on the board and offering no explanation is that
you CAN'T explain the difference!"

My perception of students' reactions may be overly influenced by the
fact that I'm an American working in a country that despises everything
about Americans...except their money, of course.

Good luck, El Torito.
Django Cat - 21 Dec 2005 09:15 GMT
> > Hi everybody,
> >
[quoted text clipped - 213 lines]
>
> Good luck, El Torito.

Nice to see you've made the jump from moribund MELE Credo, I'd
considered posting to you there saying how much more lively AUE is.

This group gets a fair number of queries from learners looking for a
straight answer to a straight question, which sadly they don't always
get (see that 'with "the" or without' thread, where all the OP wants to
know is whether or not to use an article), so it'll be good to have
another ESL/EFL pro around.

DC
Django Cat - 21 Dec 2005 11:13 GMT
> > > Hi everybody,
> > >
[quoted text clipped - 225 lines]
>
> DC

Bollocks, sorry, forget that, it's the curse of following cross-posted
links again.

DC
El Torito - 27 Dec 2005 18:53 GMT
> You mentioned 200 grammar books, but the best-known international
> guidelines for using "by" and "until" are probably the ones found in
> _English Grammar in Use_ (Cambridge University Press, 3rd edition), by
> Raymond Murphy. The North American edition is called _Grammar in Use_
> (CUP, still in the second edition). If you don't have this book, you
> should probably get your hands on it somehow.

I do believe I have checked that one. But everything about "by" and
"until" carefully avoids talking about their use in negative
sentences...

> Finally, one of the things that's hindering you in your search for
> meaning is that in your explanation sentence for "until" in the
> negative sense (I won't work until the age of 65.) can indeed be taken
> to mean that you won't start working until you hit 65. It's your
> primary meaning that's dialect (usually in American English).

Yeah, I was afraid of that.

> This is why, as Chris pointed out (2nd message in this thread),
> switching around the word order murders the meaning you're trying to
> get across.

Yeah, the scope of the negation... I'll have to toy with that one...

> My perception of students' reactions may be overly influenced by the
> fact that I'm an American working in a country that despises everything
> about Americans...except their money, of course.

Well, it's very similar to here. Except I'm not American, Japanese
pretty much like anything from the US, and they have more money than
Americans :-)

Thanx
 
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