O da geç yatmayı tercih ediyor.

He also prefers going to bed late.

Breakdown of O da geç yatmayı tercih ediyor.

• o: he
• da: also
• tercih etmek: to prefer
• geç: late
• yatmak: to go to bed

Questions & Answers about O da geç yatmayı tercih ediyor.

What does the particle "da" in "O da" do? Is it the same as the locative "-da/-de"?

"da/de" here is the enclitic meaning also/too, attaching to the previous word to indicate addition or similarity. It is written as a separate word and follows vowel harmony for a/e:

• After back vowels (a, ı, o, u): use da → O da (He/She too)
• After front vowels (e, i, ö, ü): use de → Ben de (I too)

It is NOT the same as the locative suffix "-da/-de/-ta/-te" (in/at/on), which is attached directly to the noun, can become -ta/-te after a voiceless consonant, and takes an apostrophe with proper names:

• Enclitic "also": Ali de geldi. (Ali also came.)
• Locative: Ali'de para var. (Ali has money on him.) / odada (in the room)

In your sentence, O da means "he/she also."

Why is it "yatmayı" and not "yatmak"?

Because tercih etmek (“to prefer”) selects a verbal noun complement in the form -mA + accusative. So you nominalize the verb and mark it as the object:

• yat-ma-(y)ı = the act of going to bed (as the thing preferred)

Using bare -mek after tercih etmek is not standard. You’ll typically see:

• X yapmayı tercih ediyor = “prefers to do X”

How exactly is "yatmayı" formed?

Breakdown:

• Verb root: yat- (lie down, go to bed)
• Nominalizer: -ma → yatma (“going to bed,” “lying down” as a noun)
• Accusative: -(y)ı → yatmayı (buffer y appears because the word ends in a vowel)
• Vowel harmony: after the back vowel a in yatma, the accusative uses the back unrounded ı.

So: yat- + -ma + -(y)ı → yatmayı.

Why "tercih ediyor" (present continuous) instead of "tercih eder" (simple present)?

Both are correct, with a nuance:

• tercih eder = general, habitual, or more formal statement of preference.
• tercih ediyor = very common in speech for current/ongoing or habitual preference; sounds more “in the present.”

So you can also say: O da geç yatmayı tercih eder. The meaning is essentially the same; the tone/register differs slightly.

Can I move "da" to another word? What changes?

Yes; placing da/de after different words shifts the focus of “also/too.”

• O da geç yatmayı tercih ediyor. = HE/SHE also prefers it (someone else does too).
• O geç yatmayı da tercih ediyor. = He/she also prefers GOING TO BED LATE (in addition to other things or times). Only put da/de after the item you want to mark as “also.” It must follow the word it modifies.

Can "O da" also mean “that one, too”?

Yes. o can mean “he/she/it/that (one).” Context decides whether it’s “he/she” or “that one.” So O da… could be “That one also…” if you’re contrasting objects rather than people.

Can I drop the subject pronoun "O"?

Yes, Turkish often drops subject pronouns:

• Geç yatmayı tercih ediyor. = “(He/She) prefers going to bed late.”

But if you want to keep the “also” meaning with focus on the subject, keep o with da, or place o da elsewhere:

• Geç yatmayı o da tercih ediyor.
• Geç yatmayı tercih ediyor o da. All keep the idea that “he/she too” prefers it.

Why is it "ediyor" and not "etiyor"?

With etmek, the stem-final t voices to d before the progressive -iyor, yielding ediyor. You see the same with common verbs like gitmek → gidiyor. Not every -t verb does this, but etmek and gitmek are standard examples. Also note that the tense/person suffixes attach to et-, so you write: tercih ediyor, tercih ettim, tercih ederim, tercih etmiyor, etc.

What’s the difference between "yatmak" and "uyumak" here?

• yatmak = to lie down / to go to bed.
• uyumak = to sleep. So geç yatmak is “to go to bed late,” not necessarily “to sleep late.” If you want “wake up late,” use geç uyanmak or geç kalkmak.

How do I negate or ask a question with this sentence?

• Negation: O da geç yatmayı tercih etmiyor. = He/She also doesn’t prefer going to bed late.
  If you want “He/She doesn’t prefer it either,” shift the focus: O geç yatmayı da tercih etmiyor.
• Yes–No question: O da geç yatmayı tercih ediyor mu?
  The question particle mi/ mı/ mu/ mü is separate and follows vowel harmony.

How do I say “He/She prefers not to go to bed late”?

Negate the verbal noun:

• Geç yatmamayı tercih ediyor.
  Formation: yat-ma-ma-(y)ı (nominalization + negative -ma + accusative).

Any pitfalls with spelling and pronunciation?

• ç in geç is like “ch” in “church.”
• c in tercih is like English “j”; the h is audible: ter-jih.
• ı (dotless i) in yatmayı is a back unrounded vowel; it’s not the same as i.
• da/de (also) is written separately: o da, not “oda” (which means “room”).
• Stress is typically near the end; the enclitic da is usually unstressed unless emphasized.

Could I use something stronger than "da" to mean “even”?

Yes, use bile for “even” (stronger emphasis):

• O bile geç yatmayı tercih ediyor. = “Even he/she prefers going to bed late.” This highlights surprise or unexpectedness, unlike the neutral additive da/de (“also/too”).