80515
In the following sentence

> 今日は何の映画を見るか決めたの

what is the grammatical role of か?
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2020-09-06T11:30:51.090
80513
2020-09-06T13:07:40.217
30049
question
grammar
Usage of か after verbs
From your comment it seems you are asking about the difference between:

>   1. 今日は何の映画を見るか決めた  
>  Today I decided on which film I will watch.
>   2. 今日は何の映画を見ること(を)決めた  
>  ????
>

In 1) 何の映画を見るか (which film will I watch) is an embedded question. The whole
phrase behaves like a noun, which can take the optional object particle を. So
the basic structure is

> 今日はXを決めた  
>  Today I decided on X

where X is "what film I will watch".

I don't believe sentence 2) is grammatical because of the question part 何の in
it. You could say:

> 今日は映画を見ることを決めた  
>  I decided on watching a film

but that is a different structure with a different meaning.
CC BY-SA 4.0
2020-09-06T13:07:40.217
80515
2020-09-06T13:07:40.217
7944
80513
answer