68522
> 僕は山崎先生が昨日何を言ったか忘れてしまった

I don't understand what is that か doing in this sentence I mean, It should be
an を but there's already one but anyways I don't think this is related to the
problem
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2019-05-27T23:47:51.300
68521
2019-05-28T03:12:45.310
2019-05-28T03:12:45.310
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question
particle-か
Understanding the use of か
The way to break this sentence down is like this:

僕は [山崎先生が昨日何を言ったか] 忘れてしまった。 I forgot [what Yamazaki-sensei said yesterday].

The か marks the clause as an embedded question that the main verb bears on,
and this sentence is great example of the standard pattern. You usually don't
need を after an embedded question. Instead, you simply raise a question using
an informal sentence structure (no polite です・ます) and then comment on it.

Hope that helps!
CC BY-SA 4.0
2019-05-28T00:04:52.583
68522
2019-05-28T00:04:52.583
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answer