する (2)

Verb (Irregular) (Basic ㊦ 434)

Someone or something has some (semi)permanent attribute.

Equivalent: Have

洋子は長い足をしている・います。: Yoko has long legs.
一男は丈夫な体をしています。: Kazuo has a strong body.
この机は丸い形をしている。: This table has a round shape.

Notes

1. The sentence pattern is:

Topic (subject) + Adjectiveい/な + {Noun of Bodily Part/Noun of Attribute} + している/います.

A bodily part or an attribute must be inalienably possessed by the subject. In other words, it must be such an essential part of the possessor (=subject) that he/it cannot exist without the part or the attribute.

2. In the main clause the verb する always takes the ている form, but in a relative clause ている may be replaced by た as in:

長い足をしている/した洋子
Yoko, who has long legs

【Related Expression】

Sentences of this construction can be restated using the は~が construction as follows:

Noun1 は Adjective Noun2 をしている → Noun1 は Noun2 が Adjective.

Thus, the Key Sentence example can be rephrased as:

[1]

洋子は足が長い/長いです。
Yoko has long legs.

The only perceptible difference between Key Sentence and [1] is that the latter sentence is more analytical than the former. In other words, in Key Sentence 長い足 'long legs' is one unit, but in [1] 足 'legs', is first presented as a single unit and is then further characterized as 長い 'long'.