他说的有道理。用英语怎么说？

What he said really made sense!

There is reason in what he said.
他说的有道理。

There's a lot in what he said.
他说的很有道理

There's great deal of reason in what he said
他说的很有道理

what he said made sense/ was reasonable/was rational

He have a point there

What he said sounds reasonable.

His words made sense.