有读者问：为什么下面两句中都用 anything？
(1)If there's anything else I can do please let me know.
(2)This is the last time I'll ever ask you to do anything for me.
anything 和 any 一样，都常用于表示疑问、否定或条件。句（1）中的 anything 即用于条件从句之中。这是一种常见的用法，再如：
(3)If there is anything more you want, please let me know.
(4)If anything should happen, I can take care of myself.
句（2）中用 anything 是因为它实际上用在一个含有否定意义的句子中。
