Wǒ qiàn tā hěnduō qián.
我欠他很多钱。
I owed him a lot of money.
Notes:
我(wǒ): I
欠(qiàn): owe
他(tā): he
很多(hěnduō): a lot of
钱(qián): money
Example:
A:我欠了他很多钱。
Wǒ qiàn tā hěnduō qián.
I owed him a lot of money.
B:我也是。
Wǒ yě shì.
Me too.