At a glance
その上 means "on top of that" or "in addition". It adds a second fact B that goes in the same direction as fact A, usually both good or both bad.
A。その上、B。
このレストランは安い。その上、料理もおいしい。 This restaurant is cheap. On top of that, the food is good.
How to form it
その上 is a connector. It goes between two statements.
| Where it goes | Example | Register |
|---|---|---|
| Start of a new sentence | 安い。その上、おいしい。 | Spoken and written |
| After a て-form, in one sentence | 広くて、その上、明るい。 | Spoken and written |
| After ～し, in one sentence | 広いし、その上、明るい。 | More conversational |
A comma usually follows その上.