However, according to Siliconera, "the fighting engine has aged considerably.

She had aged considerably since the photo we'd seen aboard Rex.

It was the same lugubrious announcer and he seemed to have aged considerably since his last appearance.

J had aged considerably since the computer experiments began.

Miss Cleothilda comes in and shakes his hand, she has aged considerably.

He had aged considerably during these two trying days.

He had aged considerably, looked moody and ailing for the most part.

The game play has aged considerably and it is far too easy.

Rick's once black hair has turned gray and his face has aged considerably in appearance.

In the instant case, the child, having aged considerably since the events, was unable to remember what happened, thus making the statement necessary.