Aux. is a written short form of auxiliary, and in grammar books it often means auxiliary verb — the little helping verb that stands with the main verb, like be, do, have, will, or can. You see aux. in dictionary lines, in school grammar notes, and in older labels (aux. nurse, aux. engine).

Aux.aux. is a written short form of auxiliary是auxiliary的書面縮寫，and in grammar books it often means auxiliary verb在文法書裡通常指auxiliary verb（助動詞） — the little helping verb that stands with the main verb也就是跟主要動詞放在一起的小幫手動詞，like be, do, have, will, or can像be、do、have、will或can。You see aux. in dictionary lines, in school grammar notes你會在字典的說明、學校文法筆記裡看到aux.，and in older labels (aux. nurse, aux. engine)以及一些比較舊的標示裡（像aux. nurse、aux. engine）。

People almost never say “aux” out loud for this grammar use; they say auxiliary or helping verb. Though actually, the same three letters show up in other places, so the letters alone do not tell you which meaning you have.

People almost never say 'aux' out loud for this grammar use在文法這個意思上，大家幾乎不會把「aux」唸出來；they say auxiliary or helping verb而是說auxiliary或helping verb。Though actually, the same three letters show up in other places不過其實這三個字母在其他地方也會出現，so the letters alone do not tell you which meaning you have所以光看這幾個字母沒辦法知道是哪個意思。

In this entry it is the grammar / helping-word label. In a Taiwan classroom, if your teacher writes aux., they almost always mean the helping verb. It is a mark on the page, not a word you need to pronounce in a sentence.

In this entry it is the grammar / helping-word label在這個詞條裡，它是文法／助動詞的標示。In a Taiwan classroom在台灣的課堂上，if your teacher writes aux.如果老師寫aux.，they almost always mean the helping verb幾乎都是指助動詞。It is a mark on the page它是寫在紙上的一個標記，not a word you need to pronounce in a sentence不是你需要在句子裡唸出來的字。