headache 的用法及固定搭配

headache

have a headache（头痛）里必须有a, suffer from (a) headache（患头痛）里的a可有可无。a bit of headache（一点头痛）和a bit of a headache都可以说。liable to headache（容易发生头痛的）比liable to a headache普通。