在形容词词尾直接加-ly.如:real-really helpful-helpfully careful-carefully hopeful-hopefully slow-slowly quick-quickly quiet-quietly
形容词变副词通常是加ly，其变化有规律可循，请记住以下口诀：
一般直接加，“元e”去e加，“辅y”改i加，“le”结尾e改y.
分别举例如下：
quick—quickly
true—truly
happy—happily
possible—possibly.
