Please ring me up tomorrow.

请在明天给我打电话。

youdao

Please ring me up tomorrow morning.

请在明天上午给我候电话。

youdao

Please ask him to ring me up before 6:30 tomorrow morning.

请告诉他明天早上6：30以前给我打电话。

youdao

Please ask him to ring me up before 6:30 tomorrow morning.

请告诉他明天早上6：30以前给我打电话。

youdao