Possession with ของ

khong links owner to owned, in the order thing-of-owner, and it is dropped whenever the relationship is obvious.

The thing comes first

Thai possession runs the opposite way round from English. Where English says 'my book', Thai says 'book of me': nangsue khong phom (หนังสือของผม). khong (ของ) is the linking word, and it also means 'thing' or 'belongings' on its own. The pattern is fixed: possessed thing, khong, owner. Once you have that order, possession is one of the simplest parts of the language. Nothing agrees, nothing changes form, and there is no possessive pronoun set to memorise.

Dropping khong

In everyday speech khong is very often left out, and the two nouns simply sit next to each other: nangsue phom, my book. This is the normal spoken form, not a lazy one. It is kept when the phrase would otherwise be ambiguous, when the owner is a long phrase, and in writing. It is also kept for emphasis: 'that is MY book'. For family and body parts it is nearly always dropped. mae phom is my mother; nobody says mae khong phom unless they are making a point.

Whose is it?

khong khrai (ของใคร) is 'whose', literally of-who, and it goes where the owner would go: nangsue khong khrai, whose book? To answer, put the owner in the same slot. To say 'it is mine' with nothing else in the sentence, khong phom or khong chan on its own does the job. khong (ของ) also introduces things in general: khong kin (ของกิน) is food, literally things to eat; khong wan (ของหวาน) is dessert; khong fak (ของฝาก) is a souvenir brought back for someone.

Having, and belonging

mii (มี) is the verb to have, and it is also 'there is'. mii rot means both 'I have a car' and, in the right context, 'there is a car'. For a place, yu (อยู่) means to be located: ban yu thii chiang mai, the house is in Chiang Mai. Do not use pen for location. Combine them and you can describe almost any arrangement of people and things: mii phuean yu thii nan, I have a friend who lives there.

Everyday ownership

Half of these leave khong out, which is exactly the proportion you will hear in the street.

Putting the owner first

phom khong nangsue reverses the phrase and means nothing. The possessed thing always leads. A quick self-check: the first noun you say is the thing you are talking about, and everything after it narrows down which one you mean. That is true of classifiers, of adjectives, and of possession alike.

Using pen for location

pen (เป็น) links a noun to a noun: he is a teacher. yu (อยู่) says where something is. Saying ban pen chiang mai claims the house IS Chiang Mai. The third member of that family is khue (คือ), which means 'is' in the sense of a definition or identification: nii khue arai, what is this?

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