Is that so?
是吗？
A: Tom is coming over to my house today.
B: Is that so? I've never met him.
A: 今天汤姆要来我家。
B: 是吗？我从来没见过他。
A: My favorite food is pizza.
B: Is that so? I don't like pizza at all.
A: 我最喜欢的食物是披萨。
B: 是吗？我一点也不喜欢披萨。