Japanese/Old Japanese/Active-Passive alignment.md
... ...
@@ -17,4 +17,15 @@ Having this duality might seem a bit odd, given that old-japanese had only one f
17 17
18 18
On the surface, it might look like these are just synonyms for subject and object, however they represent _semantic_ function instead of _syntactical_ one. As an example, making a sentence use passive voice changes the subject, but it doesn't change the agent
19 19
20
-The key piece of info is that **verbs of action have an obligatory agent and optional patient, while verbs of change have an obligatory patient and optional agent**.
... ...
\ No newline at end of file
0
+The key piece of info is that **verbs of action have an obligatory agent and optional patient, while verbs of change have an obligatory patient and optional agent**. Using this model also means there's no case switching for transitive-intransitive pairs:
1
+
2
+jugyou ga hajimatta
3
+class.PAT finish.PAST
4
+sensei ga jugyou wo hajimeta
5
+teacher.AGT class.PAT finish.PAST
6
+
7
+## Alignment with old japanese verb classes
8
+
9
+Another piece of info supporting this claim might be that the two main old japanese verb clases (nidan and yodan) correlate really well with the action-change verb split.
10
+
11
+Nidan verbs are mostly verbs of change, while yodan verbs are mostly verbs of action. Some action verbs do belong to the nidan class, however they are almost always more polite/formal versions of other action verbs which belong to the yodan class. This might suggest that even in old japanese, making the subject patientive was a way of making a sentence more polite.
... ...
\ No newline at end of file