It is a pity that... 遗憾的是……可怜的是……
例句：
It is a pity that my parents can't come with me and see such a beautiful scenery.
遗憾的是我父母没有和我一起来，也看不到这样美丽的景色。
It was a pity that you missed the graduation party.
可惜的是你错过了毕业晚会。
A:It is a pity that you don't pass the test.
很可惜你没有通过测试。
B:Please give me one more chance.
请再给我一次机会。