Take the 2-minute tour ×
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It's 100% free, no registration required.

I heard this lyric in a song the other day and it just sounded so wrong that I assumed it must be incorrect grammar, but I can't find any specific prohibition that applies.

That's what it's.

That rolls off your tongue with the grace of a moose in a tutu, but I can't figure out why.

There is clearly no problem with ending other sentences with a contraction. These sound fine.

I thought I could, but I can't.
Stop touching that, it will fall off if you don't.
You say that the sky is green, but it isn't.

Also, it sounds just fine if you remove the contraction:

That's what it is.

So what's up with this construction? Should it be avoided?

share|improve this question
16  
I think you answered your own question with the moose-tutu analogy. –  jeffamaphone Aug 12 '10 at 20:56
add comment

5 Answers

up vote 35 down vote accepted

This is covered in the Cambridge Grammar of the English Language (CGEL), as it turns out, in Chapter 18, “Inflection Morphology and Related Matters”, section 6, “Phonological reduction and liaison”.

The form ’s, representing either has or is, along with ’m (am), ’re (are), ’ve (have), ’ll (will), and ’d (had or would) are called clitics, and they are a variant of what are known as weak forms of words, which are pronunciations of words like a, have, from, you, etc. (about fifty in total) with a reduced vowel, such as schwa.

In the discussion of weak and strong forms, CGEL points out that there are certain grammatical contexts that require strong forms, and one of those contexts is something called stranding, where the object of a phrase is preposed (moved before the phrase). These are examples they give of stranding requiring strong forms:

a. Who did you give it [to __ ]?
b. We’ll help you if we [can __].
c. They want me to resign, but I don’t intend [to __].

In each of these cases, the word in the brackets has a weak form, but it cannot be used in this context because its object has been stranded. Of course, in written English, there is no difference between weak and strong forms—it’s only a spoken difference—but clitics are distinguished in written English, and the restriction on weak forms also extends to clitics. (There are additional restrictions on clitics, but they are not relevant to this discussion).

So, thus we can say that the second is in the sentence It is what it [is __] cannot be reduced to either a weak form or to a clitic because of the restriction to strong forms in cases of syntactic stranding.

share|improve this answer
4  
Excellent answer. W.S.Gilbert deliberately broke the rule for the sake of rhyme, in Ruddigore: "Avoid an existence of crime/Or you'll be as ugly as I'm". –  Colin Fine Aug 9 '11 at 17:00
add comment

You can end a sentence with a NEGATIVE contraction (Is he here? No he isn't), but not a POSITIVE one (Is he here? Yes he's).

share|improve this answer
3  
Do you have a source to back that up? –  IQAndreas Jan 7 at 14:31
add comment

I think we're so preconditioned to expecting a word/phrase after a contraction ("it's" in particular), that it strikes the listener/reader as a rather unexpected/out-of-place stop.

I'm not sure if there's technically anything grammatically wrong with that sort of usage. (Obviously contractions should never be used in formal writing.) Still, I think we all agree it sounds very unnatural.

share|improve this answer
add comment

"It's" is only used when something more follows, you wouldn't use that at the end of a sentence. It sounds like there is something missing if you just say, "it's" or end a sentence with it.

Probably what makes the it's man so funny.

share|improve this answer
    
I realize that, hence the question about whether it is technically incorrect or just awkward. –  JohnFx Dec 15 '10 at 15:55
add comment

I already answered this but the answer didn't post...so let me try again!

My guess would be that your ear is tripping over the homophone -

its = belonging to it

it's = it is

That's why, when you try the same thing with the other non-homophone contractions, it sounds fine. When you try it with another homophone contraction, look at what happens:

If you want to know if they're crazy, well, they're.

If you want to know if they're crazy, well, they are.

(Typing like Yoda, I am)

Your ear may not recognize whether you're hearing it's or its, they're or their (or there...). So the ear expects another noun. I think that's why it sounds fine with other contractions that aren't homophones. "Can't," "don't," and "isn't" clearly sound like the words they are. "It's" and "they're" are the sources of endless confusion.

share|improve this answer
4  
Ah, but Typing like Yoda, I'm. doesn't sound good, and there is no homophone for "I'm". Or is there? Also notice it sounds okay when I put it in quotes like that at the end of a sentence. This is a very strange phenomenon. –  jeffamaphone Aug 12 '10 at 21:49
6  
This answer isn't correct; please see nohat's answer. –  delete Sep 5 '10 at 1:28
    
yep, not right, the "they're" sentence sounds wrong to me to top it off. –  Claudiu Oct 30 '10 at 2:38
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.