A basic example:
-Hey, will you be at the party this Friday?
-I'll
A guy I know does that all the time and I can't convince him that this isn't correct... or is it?
For me it just sounds stupid and is hard to pronounce only one word like that
A basic example:
-Hey, will you be at the party this Friday?
-I'll
A guy I know does that all the time and I can't convince him that this isn't correct... or is it?
For me it just sounds stupid and is hard to pronounce only one word like that
Only unstressed auxiliaries can be contracted.
But when an auxiliary is used by itself to 'code' (stand for) the longer verb phrase it introduces, it is always stressed.
Will you be at the party this Friday?
right! I willbe at the party.
Consequently, an auxiliary used this way cannot be contracted.
Will you be at the party this Friday?
wrong! I'llbe at the party.
** ADDED **
anotherdave reminds us of a couple of contexts in which this principle seems not to be followed:
With contractions in which not becomes n't—"I shan't!", "I won't", "I haven't!", and so forth. Here, however, the verb is still emphasized; and it is really only not which is contracted, losing its vowel and its syllabic status; the last consonant of the auxiliary assimilates to the n't, which is really a separate phenomenon.
With contractions followed by not—"I'll not", "I've not", and so forth. In these cases the auxiliary does not 'code' the entire remainder of the following verb phrase: it remains unstressed, just as it is in the unreduced form, and the emphasis falls on not.
This is as wrong as wrong can be! He should be saying I will. After all, you don't say I'm in response to the question Are you a human?. You say I am. You need that expanded form to give the emphasis to the verb. And it is indeed very difficult to say on its own because you just never hear people say that. Long story short, what your friend does is wrong.
Example:
— Hey, will you give me a wakeup call tomorrow's morning? Otherwise, I'll be late again.
— No worries. I will.
Logically speaking, it is correct. Because the information is being conveyed.
But, sometimes the correct emphasis is not given, which makes the word sound like the person is uninterested.
But, it is correct as an answer.