Hi Yusuke. Fair question! It seems that you’ve managed to confuse
yourself as you are mixing up the definitions for the word “have.” The book’s
definition, and in your first two examples above, the word “have” is used to
indicate possession. This is in line with its primary definition of “to own or to
possess.” If I moved into a new apartment, one which had no bathtub, only
a shower and you asked me, “Does your new apartment have a shower, a bathtub,
or both?” I would probably answer, “I have a shower.” So, in this context, it,
too, follows that primary definition and that is why it was used as an example.
However, another definition of it means “to experience or undergo or endure (as in pain)” as in, “I have
a headache.” Yet, still another, yet similar, definition it can mean to “to
get, receive, or take.” Thus, in your mind, the confusion arises as you are applying
these definitions both of which are out of
context for this lesson and the way this sentence is constructed.*
わかりますか? I sincerely hope that this helps you, rather than
confuses you more! J.
*The book is trying to teach you something, so do not fight it.
If something seems wrong, I can guarantee you that it will be your
understanding of the lesson, not the book’s examples! (*-^)