I would rather he do it than he not do it.
In the sentence above:
(1) Is "would" the main verb and predicator and the clause he do it than he not do it its complement?
(2) Does the adverb "rather" modify "would"?
(3) Is he do it than he not do it a content clause?
Yes: in the idiom "would rather", "would" is the auxiliary, and "rather" is an adverb modifying it. " is subjunctive (a sub-type of content clause), which I believe can be licenced by "would rather". I would rather [he do it than [he not do it]].
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Yes: in the idiom "would rather", "would" is the auxiliary, and "rather" is an adverb modifying it.
"He do it ..." is subjunctive (a sub-type of content clause), which I believe can be licenced by "would rather".
I would rather [he do it than [he not do it]].