a few和few修飾可數名詞，a little和little修飾不可數名詞;a few和a little表示肯定意義，few和little表示否定意義，可受only修飾。如：

　　① Few people will agree to the plan because it’s too dangerous.

　　②This text is easy to understand though there are a few new words in it.

　　③ There is little water left in glass. Will you please give me some

　　④ Don’t worry, we have a little time left.