I don't care if I never see him again!

　　即使我永遠(yuǎn)再也見(jiàn)不到他，我也不在乎！

　　Call me if you have any problems regarding your work.

　　你如果還有什么工作方面的問(wèn)題就給我打電話。

　　What difference will it make if he knows or not?

　　他知不知道有什么關(guān)系嗎？

　　Please let me know how many are coming, if any.

　　請(qǐng)告訴我，如果有人要來(lái)的話，有多少？

　　That was a disaster if ever there was one!

　　那確實(shí)是場(chǎng)災(zāi)難！