Direct Object as Topic


Can someone please give a simple example of a direct object acting as the
topic of a sentence?




本 **をば** 買いました。  
I bought the book.

（＾＾）

（東北で聞いた言い方ですけれども。）

**Additional Detail**

There is an old combination of using は immediately after を, essentially
topicalizing the object phrase. This was more prominent in older times, and it
has largely disappeared from modern standard Japanese, persisting mostly in
dialect. When I lived in the Tōhoku region (the northeast of Honshū), I would
hear this very occasionally -- mostly used by older folk.

The combination of を{o} + は{wa} causes the は{wa} to change to ば{ba}. This is a
phenomenon called [rendaku](https://en.wikipedia.org/wiki/Rendaku), where
certain combinations cause voicing of the initial consonant of the second
part.

In terms of meaning, をば is used to emphasize the object of the statement.

