...各自有其解釋.其是要避免單複數的困擾,最好的方法就是把toothache 當不可數名詞用：I/We have (terrible) toothache...脫離現實生活的例句了！"We all have our toothache(s) sometimes in life (人生中難免有時會牙痛)" ...
Only use toothache or toothaches instead. When you have the single attack of pain, you may... if you always have pain on your teeth/tooth, you may use as "toothaches". For example: I got toothache yesterday. (It means...
....複數(s)+過去式 3. My sister [has/had] a bad toothache.單人的"to have"