I've thought a lot about
He pensado mucho en lo que ha dicho Tom.
I've thought a lot about what Tom said.
I've thought about it a lot.
No he pensado mucho en por qué quería hacer esto.
I haven't given much thought to why I wanted to do this.
— Nicky, la aprendiz de bruja (1989)
I've thought about this a lot.
Estos últimos meses he pensado mucho en ti.
I've been thinking about you a lot these past few months.
— Hable con ella (2002)