He put a ring on his ring finger.

She opened the book with her thumb.

He pointed to the sky with his index finger.

She was wearing a diamond ring on her ring finger.

The passive form in Japanese is used differently from English.

This quadrilateral is a square.

By learning the imperfective form, you can understand Japanese grammar more deeply.

Please tell me the singular form of this word.

In English, adding 's' after a noun makes it a plural form.

In Japanese grammar, the hypothetical form is one of the inflectional forms of verbs.