1)some, any, no既可⽤于可数名词也可⽤于不可数名词，表⽰不肯定的数量。
  【例如】
  I have hardly any coffee left.
  There are some books and a pen on the table.
  Hurry up, there is no time left.
  * no⽤作限定词，相当于not any/not a.
  【例如】
  This old man has no relatives, so he has to depend on his neighbors for a living.(This old man doesn't have any relatives, so he has to depend on his neighbors for a living.)
  2) any通常⽤于否定句或疑问句，some⽤于肯定句。
  【例如】Do you have any questions about the passage?No, I don't have any questions about it, but I have some questions about the assignment.此外，* some也可⽤于疑问句，表⽰说话⼈希望得到肯定回
答。
  【例如】
  Would you like to have some tea?Would you mind buying me some sweet?* any常⽤于if引导的状语从句。
  【例如】
  If any letters arrive for me, can you sent them to this address?If you have any requirement, you can ask me.* any也可以⽤于肯定句，表⽰任何。
  【例如】
  The medicine is on sale everywhere. You can get it at______chemist's. (CET-4 1997,6)
  A) each B) some
  C) certain D) any
  each表⽰各个，some表⽰⼀些，certain表⽰⼀定的，any⽤于肯定句时，表⽰任何，故根据意思，答
案为D。
  3) some, any, no可以与more连⽤，表⽰“更多”。
  【例如】Please give me some more water, for I am really thirsty.I have no more good ideas. I am at my wit's end.Do you have any more books available?
  4) some, any与单数可数名词连⽤时可表达特定含义。
  【例如】
  Any boy in the class can pass the exam. (any boy=every boy)Some guy did it without being known by the others. (some ＝a certain)
some, any, no组成的复合词
  1)由some, any, no组成的复合代词：someone, something, somebodyanyone, anybody, anythingno one, nobody, nothing这些代词只能⽤作单数，⽤法与some, any, no相似。
  【例如】
  No one in the family could understand Jack.There is something important in today's newspaper. Do read it carefully.There is nothing important in the meeting. We'd better stop now.everyone, someone, anyone与every one，some one，any one⽤法不同。前者有所有格，⽽后者没有。everyone, someone, anyone指⼈，⽽every one，some one，any one可以指⼈，也可指物。
  【例如】
  ①I have no interest in anyone's personal things.
  ②Don't you believe that I do this for everyone's sake?
  ③These books, any one of which is of great value, are written by a famous modern writer.
  ④Anyone has the right to vote if he is an adult citizen.
  2)由some, any, no组成的复合副词：somewhere, nowhere, anywheresomehow, anyhowsomewhat
  【例如】
  I am sure you will find him somewhere near the school.I went nowhere during the vocation.Anyhow,
somewherewe must try our best to save him. (anyhow: by any possible means)We must get money for the rent somehow. (somehow: in some way, by one means or another)I am somewhat disappointed at his decision. (somewhat: in some degree)