People say that Tom is a great football player.
⇒ It is said that Tom is a great football player.
People say that Tom is a great football player.
⇒ It is said that Tom is a great football player.
“Say” chia thì hiện tại → dùng is said
Mệnh đề sau ở thì hiện tại đơn (is a great football player) → giữ nguyên.