Turkish Language - About the verb - to be - Positive

The verb - to be - is used in sentences to describe a - state of being
The house is blue.
Mehmet was ill.
It will be a quick journey.

The Verb - "to be"

The Verb to be takes the form of a suffix in Turkish. It is subject to Vowel Harmony Rules and also Consonant Mutation when added to words ending in a hard consonant. In the present tense only 3rd person singular has consonant mutation. It follows that for vowel harmony and consonant mutation the following forms are used:
[The third persons' -dir suffix changes to -tir when added to hard consonants - See Consonant Mutation

PersonAfter all soft consonantsAfter hard consonants
ç, f, h, k,p, s, ş, t
After Vowels
I am-im, -ım, -üm, -um--yim, -yım, -yüm, -yum
you are-sin, -sın, -sün, -sun--
he/she/it is(-dir, -dır, -dür, -dur)(-tir, -tır, -tür, -tur)-
we are-iz ,-ız,-üz, -uz--yiz, -yız, -yüz, -yuz
you are -siniz, -sınız, -sünüz, -sunuz--
they are(-dirler, -dırlar, -dürler, -durlar)(-tirler, -tırlar, -türler, -turlar)-

Present Tense only: (This not does not apply to the past tense below)
Third Person Plural ending shown in brackets above are very often omitted in conversation. They are added only for emphasis and for public advice, notices and warnings. They are also used when stating an actual fact. [Apples are fruit - Elma meyvedir]
You can see the use of -dir in Public Notices on the page Public Signs

Past Tense Suffixes

The past tense endings are use in all persons although sometime the -ler/-lar of the plural forms is omitted in conversation.
Note the use of the Buffer Letter -y- in the formation of the Past Tense for Verb stems which end in a vowel. This is to keep the final vowel of the verb stem separated by mutating the first vowel of the Past Tense endings -idim etc to -ydim etc. As every person suffix in the past tense begins with a -d then it follows that every person can be subject to consonant mutation to -t when added to a word ending in a hard consonant.

PersonSuffixConsonant MutatedAfter Vowels
I was-dim, -dım, -düm, -dum-tim, -tım, -tüm, -tum-ydim, -ydım, -ydüm, -ydum
you were -din, -dın, -dün, -dun -tin, -tın, -tün, -tun-ydin, -ydın, -ydün, -ydun
he/she/it was-di, -dı, -dü, -du -ti, -tı, -tü, -tu-ydi, -ydı, -ydü, -ydu
we were -dik ,-dık,-dük, -duk -tik ,-tık,-tük, -tuk-ydik, -ydık, -ydük, -yduk
you were-diniz, -dınız, -dünüz, -dunuz -tiniz, -tınız, -tünüz, -tunuz-ydiniz, -ydınız, -ydünüz, -ydunuz
they were-diler, -dılar, -düler, -dular -tiler, -tılar, -tüler, -tular-ydiler, -ydılar, -ydüler, -ydular

Vowel Harmony

Both the present and past obey the rules of vowel harmony, which are summed up as follows:

The A-Undotted GroupThe E- Dotted Group
Final vowel -a or is followed by in suffix.Final vowel -e or -i is followed by i in suffix.
yaşlıyız - we are oldbir iğnedir - it is a needle
hastaydık - we were illzengindin - you were rich
Final vowel -o or -u is followed by u in suffix.Final vowel or is followed by ü in suffix.
bir vazodur - it is a vase.bir gözdür - it is an eye.
yorgundum - I was tired.Türk'tüler - they were Turkish.

Consonant Mutation

The present and past tense suffixes which begin in -d- undergo consonant mutation -dir becomes -tir and all the past tense suffixes beginning in -di become -ti after a final hard consonant the letters ç f h k p ş s t

Consonant Mutation - Present Tense and Past Tense Examples

Suffixes are not fixed directly to Proper Names (words which begin with a capital letter), an aphostrophe comma is used instead:
Mehmet' tir - It is Mehmet
İstanbul' da - In Istanbul
Hükümet' ten - From the Government

Some Examples

 

Interrogative Forms

Asking questions, the interrogative particle -mi? is used to form questions. It is placed after the word it affects, and has the positive or negative present tense personal endings added - here are the forms showing vowel harmony:

The Positive form of the Interrogative is written separately from the word it affects, but obeys the rules of Vowel Harmony. The longer forms which end in -dir are more formal and are used in instructions and public notices - they are not usually used in general conversation.

Present tense positive question examples

Note that the question part is written separately from the verb - but still obeys vowel harmony rules.

Interrogative past tense - the verb - "to be"

The Past tense personal endings are added to the question particle -mi and obeys Vowel harmony but is written separately. değil is used for the negative

Note the use of the Buffer Letter -y- in the formation of the Past Tense Questions. This is to keep the final vowel of the question tag -mi by mutating the first vowel of the Past Tense endings -idim etc to -ydim etc.

Past tense positive question examples

Note that the question part is written separately from the verb - but still obeys vowel harmony rules.

The Future - "will be"

The Future of the verb - "to be" - is lacking in Turkish. It place is taken by the Future Tense of the Verb olmak - to be, to become. See discussion on Future of - olmak
Yarın hazır olacağım - I will be ready tomorrow
Er geç zengin olacaksın - You will become rich sooner or later [er geç (ergeç) = sooner or later]
Bu gece parti çok güzel olacak - It will be a great party tonight
- All these are "state of being" sentences but Turkish uses the verb - olmak - to become - to convey the future of the verb - to be