he alternado
-I have alternated
Present perfect yo conjugation of alternar.

alternar

No te muevas, he dicho....al escritorio en medio de una noche tempestuosa durante la cual he alternado desde el éxtasis al agotamiento y de vuelta otra vez.
Don't move, I said....to my desk in the middle of a stormy night during which I have been tossed from exultation to exhaustion and back again.
He alternado entre la ficción y la no-ficción.
I alternated between fiction and non-fiction.
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