谢谢:Thank you;Thanks a lot ;thanks;Thank you very much;Many thanks. 不用谢,别客气:You're welcome;That's all right;That's OK;Not at all;It's my pleasure;It's a pleasure. 当别人不能帮助你时,你应该说:Thank you all the same. 对不起:Sorry,excuse me;I'm so sorry . 回答:It doesn't matter.