'll
This is a contraction of the particle will, and is used alongside the phrase going to to form the future tense.
1a The contraction 'll can be suffixed to all the pronouns in writing. It's added directly to pronouns that end in a vowel. Phonetically, this results in (1) a dark, approximant [ɫ] sound at the end of these words, and (2) in conversational or rapid speech, a reduction of that vowel or diphthong. Thus, the form he'll tends to sound like heel in careful speech or when emphasized, and like hill in normal or rapid speech.
She'll be here any minute.
[ʃɪɫ.bìhir ɛnimɪ́nɪt̚]
Who knows where we'll be in five years.
[hùnou̯z wèǝrwɪɫ.bíyɪn fài̯v yìǝrz ]
There are many who'll agree.
[ðeǝr.ʀ.mɛ̀ni hʊɫǝgríː]
He'll call you when he's ready.
[hɪɫ.kʰɑ̀ːɫ wɛnizrɛ́ɖi]
I think they'll agree.
[ai̯θɪ̀ŋk ðɛɫǝgríː]
You'll know him when you see him.
[yʊɫ.nòwǝm wɛnyusíyǝm]
1b In writing, the suffix 'll isn't normally added to nouns and names that end in a vowel, but in speech, a reduced form of the word will is used. This reduction is pronounced [ʊɫ] (and in some speakers [ǝɫ]) and it's pronounced as a separate syllable. In other words, it takes up the same space that the unstressed word will would.
Note that words that end in a diphthong containing [i], like bowtie [bóu̯tʰài̯] and Eli [ílai̯], change this [i̯] into [y] in front of the reduction [ʊɫ]. Similarly, words that end in a diphthong containing [u̯], like Moscow [mɑ́skæ̀u̯] and potato [pʰǝtʰéi̯ɖou̯], change this [u̯] into [w] in front of [ʊɫ]. Note that the resulting [wʊɫ] sounds quite similar to the full form [wɪɫ] and will barely sound like a reduction.
Rita will call you in the morning.
[rìɖǝ͡.ʊɫ kʰɑ̀ːɫ.yu ɪnðǝmóǝrniŋ]
That bowtie will make you look silly.
[ðæt̚bòu̯tʰayʊɫ mèi̯kyulʊk sɪ́li]
Moscow will be too cold in January.
[mɑ̀skæwʊɫ bìtʰukʰóu̯ɫd ɪnǰæ̀ɲuwèǝri]
America will be great again.
[ǝmèǝrɪkǝ͡.ʊɫ bigréi̯ɖǝgɛn]
Eli will call you in the morning.
[ìlayʊɫ kʰɑ̀ːɫ.yu ɪnðǝmóǝrniŋ]
A potato will give you energy.
[ǝpʰǝtèi̯ɖowʊɫ gɪvyuwɛ́nʀǰi]