I think that "o zaman" too can be used in this meaning. Is this true?

If yes, is there any big difference between "O halde planı değiştiyoruz" and "O zaman planı değiştiyoruz" ?

That´s correct Tomac. That can be translated as " I´m in "

Doğru. You can also use " o zaman " in that context and that won´t make difference in the meaning.

Tunci, many thanks for your comments!

Adverbs with case endings

There are some adverbs end with noun cases but do not add any ablative, locative or dative content in their meaning. The case meaning has been lost in those adverbs.

Ani + den  -à suddenly

Aniden  ayağa kalktı. -à Suddenly he/she  stood up.

Bir + den -à Suddenly, all of a sudden

Birden fırtına çıktı. -à Suddenly a storm came out.

Sahi + den -à really

Sahiden  hatırlamıyorum. -à I don’t really remember.

Yeni + den -à again, over again, once again.

Bu sene yeniden sınava girecek misin ? -à Will you take the exam again this year ?

İdiomatic compound verbs.

dert yanmak - to pour out one´s trouble.

Yaşlı kadın komşusuna dert yanıyordu. ---> Old woman was pouring his troubles to her neigbour. [ In other words, she was sharing and telling/complaining about her troubles, problems with her neigbour ]

Sözünde durmak – to keep hıs/her promise/word

Sözünde dur ve bu işi bitir. --à  Keep your promise/word  and finish this job.

Kafasına koymak -à to be determined , to set his/her mind on doing something

Bir kere kafasına koymuş doctor olacak. -à He/She already set his/her mind on becoming a doctor.

Ağzından düşürmemek --à Keep talking/mentioning about something or somebody

Emre yeni arkadaşını hiç ağzından  hiç düşürmüyor  -à Emre keeps talking /mentioning about his new friend.

El uzatmak -à to aid, to help

Tanınmış işadamı bu fakir aileye el uzattı. -à The famous businessman helped this poor family.

Derivational suffix: -LIK

This suffix is added to nouns to form adjectives, and to adjectives to

form nouns. Its other forms are  lik, luk, lük

güzel :beautiful        güzellik ----> beauty

iyi :  good               iyilik   -----> goodness

hasta : sick             hastalık ----> illness

temiz : clean           temizlik ------> cleanliness

kim  : who              kimlik ------->  identity

gün : day               günlük ------> daily

baş : head              başlık ------> headline

* This suffix also functions as  “for”  like için.

Beş kişilik bir oda istiyorum. -à  I want a room for five.

 * As an adjective :

Beş günlük bir tatil yaptık. ----> We had a 5 days holiday.

Tek kişilik bir yatak aldık.  ---->  We bought a single bed (bed for one).

Bugünkü gazetenin başlığını gördün mü ?  Have you seen the headline of today’s newspaper ?

The -LiK Sufffix also indicates the purpose for which something is

intended or used:

şeker  sugar     şekerlik -à Sugar -bowl

kulak  ear         kulaklıkà Head-phones

tuz salt             tuzluk   -à salt-cellar

anahtar key     anahtarlık -à key-holder /keychain

* The –LIK suffix may also comes after  -lı, -sız and -ci

suffixes, indicating a state of having, not having and being

something:

canlı  [lively]  -à  canlılık   liveliness

akılsız [ unintelligent/ stupid ] -à  akılsızlık stupidity

dişçi  [dentist] --à  dişçilik  dentistry /state of being dentist

Stress on numeric groups

* When we say the numeric groups , the stress comes in the very last syllable on the small number.

elli iki    52

altmış altı    66

yetmiş beş  75

doksan dokuz  99

dokuz yüz kırk sekiz    948

• In numeric adjective phrases, the stress comes on adjective part :

Üç bin  -à 3000

Dört  milyon -à 4.000.000

Seksen  milyar -à 80.000.000.000

Indefinite noun phrases with repetition

Ankara- İstanbul [ tren ]hattı --à Ankara- İstanbul [train/bus] line

Repetition     

Meyve–sebze  pazarı -à Fruit – vegetable market

Saç–sakal  traşı -à Hair-beard shaving

Odun–kömür  deposu -à Wood-Coal depot /storage

Boya-badana  işi -à Whitewash – paint  job 

-dan as an adjective maker

Ablative suffix –dan may come onto some words and makes them adjectives ,

Su + dan -à  simple

Sudan sebepler -à [unimportant] simple reasons

Sudan bahaneler  -à [unimportant] simple excuises

Sudan sebeplerle okulu bıraktı. -à He/She left school for some simple reasons.

Sıra + dan -à  Ordinary, usual

Sıradan bir yaz günüydü...  --à It was an ordinary summer day…

Top + dan -à [Toptan]  Wholesale, whole , as whole

İç + den  [içten ] -à sincere,honest

Can + dan [candan]  -à sincere, willing, ingenuous

Yürek + den [Yürekten] -à kind, heartfelt, sincere

-dı

With some words the past tense suffix –dı  loses its tense function and produces adjectives and nouns.

Miras + yedi -à Mirasyedi [ spendthrift, (someone) who squanders his wealth; who spends money like water  ]

Şıp + sevdi  -à  Şıpsevdi [ person who falls in love very quickly  ]k

Kül+ bastı --à  Külbastı [ broiled meat, chop ]

İmam + bayıldı -à   İmambayıldı [ A Turkish dish consisting of aubergines stuffed with an onion and tomato mixture]

Gece +  kondu -à  Gecekondu [ House put up quickly without proper permissions, shanty house ]

Kaptı + kaçtı --à  Kaptıkaçtı [formerly minibus, stealing by snatching, a card game ]