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Dear Luis,<br>
<br>
concerning question 1:<br>
Following up on Sebastian's admonition to distinguish between the
syntactic construction and the morphological forms involved, let me
suggest a term for the two "impersonal" constructions:<br>
<br>
As to the first construction, at least two conditions should be
clarified:<br>
<ul>
<li>The reference of the first person plural pronoun is limited to
human beings, much like English <i>one</i>, French <i>on</i>
etc. in this use.</li>
<li>The syntactic function of this pronoun in this construction is
not constrained; it need not be subject.</li>
</ul>
If these conditions are fulfilled, the construction might be called
'non-specific person construction', where 'person' has esentially
its literal sense.<br>
<br>
As to the second construction, it should probably not be called a
passive since there are quite a few languages, including Spanish,
which have this construction beside a "real" passive which involves
a non-active voice of the verb. Perhaps 'unidentified agent
construction' could fit.<br>
<br>
Otherwise, information on all of this should be retrievable from<br>
Malchukov, Andrej & Siewierska, Anna (eds.) 2011, <i>Impersonal
constructions. A cross-linguistic perspective.</i> Amsterdam &
Philadelphia: J. Benjamins (Studies in Language Companion Series,
124).<br>
<br>
Best,<br>
Christian<br>
<br>
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