I (pronoun)

In Modern English, I is the singular, first-person pronoun.

Morphology

In Standard Modern English, I has five distinct word forms:I: the nominative form

*I is the only pronoun form that is always capitalized in English. This practice became established in the late 15th century, though lowercase i was sometimes found as late as the 17th century.me: the accusative formmy: the dependent genitive formmine: the independent genitive formmyself: the reflexive form

History

Old English had a first-person pronoun that inflected for four cases and three numbers. I originates from Old English ic, which had in turn originated from the continuation of Proto-Germanic ik, and ek; the asterisk denotes an unattested form, but ek was attested in the Elder Futhark inscriptions. Linguists assume ik to have developed from the unstressed variant of ek. Variants of ic were used in various English dialects up until the 1600s. The Proto-Germanic root came, in turn, from the Proto Indo-European language eg-.
Old English me and mec are from Proto-Germanic meke and mes. Mine is from Proto-Germanic minaz, and my is a reduced form of mine. All of these are from PIE root me-.

Syntax

Functions

I can appear as a subject, object, determiner, or predicative complement. The reflexive form also appears as an adjunct. Me occasionally appears as a modifier in a noun phrase.

Subject: I'm here; me being here; my being there; I paid for myself to be here.
Object: She saw me; She introduced him to me; He gave me the book; I saw myself in the mirror; It was a picture of me.
Predicative complement: The only person there was me / I; I made her mine.
Determiner: I met my friend.
Adjunct: I fixed the problem myself.
Modifier: ''the me generation''

Coordinative constructions

The above applies when the pronoun stands alone as the subject or object. In some varieties of English, those rules also apply in coordinative constructions such as "you and I".

"My husband and I wish you a merry Christmas."
"Between you and me..."

In many dialects of informal English, the accusative is sometimes used when the pronoun is part of a coordinative subject construction, as in

"Phil and me wish you a merry Christmas."

This is stigmatized but common in many dialects.

Dependents

Pronouns rarely take dependents, but it is possible for me to have many of the same kind of dependents as other noun phrases.

Relative clause modifier: the me I'd like to be; *me I'd like to be
Determiner: the me I'd like to be; *the me
Adjective phrase modifier: the real me
Adverb phrase external modifier: ''Not even me''

Semantics

I's referents are limited to the individual person speaking or writing, the first person. I is always definite and specific.

Pronunciation

According to the OED, the following pronunciations are used:

Form	Plain	Unstressed	Recording
I	/ʌɪ/ /aɪ/
me	/miː/ /mi/	/mi/, /mɪ/ /mɪ/
my	/mʌɪ/ /maɪ/
mine	/mʌɪn/ /maɪn/
myself	/mʌɪˈsɛlf/ /maɪˈsɛlf/	/mᵻˈsɛlf/ /məˈsɛlf/