how to distinguish"can,could,may"

题目

how to distinguish"can,could,may"
If Ms Donna were looking for a permanent job,our recruiter( )help.
Q:"can,could,may",which should be chosen,and distinguish them,plz,thank u
first choose the answer to the title and explain as detail as possible,plz.
TO 回答者：匿名 2009-11-26 14:02 :
would you like to explain the distinguish of chinese"和,与,同"?

答案

你丫假洋鬼子吧?英文说这么利索还问can,may,could之间的区别.很无语.Now,I will choose "could"."Could" here means that "sb not only has the ability to help,but also want to help".Appearantly,our recruiter ...