Inattention is a lack of attention: the mind is elsewhere, so you do not notice or do not stay with what you should. Teachers use it when a student drifts off.

Inattentioninattention is是 a lack of attention缺乏專注: the mind is elsewhere心思跑到別的地方去了, so you do not notice or do not stay with what you should所以你沒注意到，或沒有停留在該注意的事情上。 Teachers老師 use it when a student drifts off會在學生恍神的時候用這個字。

You can also have inattention to detail — missing small things — or inattention to a person, which can feel like you do not care. It is a slightly formal word, but not rare.

You can also have你也可以有 inattention to detailinattention to detail（沒注意到細節） — missing small things漏掉小地方 — or inattention to a person或是inattention to a person（對一個人不上心）, which can feel like you do not care這會讓人感覺你不在乎。 It它 is a slightly formal word算是稍微正式一點的字, but not rare但不算少見。

Though actually it names a gap, not a plan, and not always a disease. Doctors may talk about inattention as one part of ADHD, but in ordinary English it just means “not paying attention.” It is also not the same as ignoring someone on purpose.

Though actually不過實際上 it names a gap它指的是一個空缺, not a plan不是刻意的計畫, and not always a disease也不一定是一種疾病。 Doctors may talk about醫生可能會把 inattention as one part of ADHDinattention當作ADHD的一部分來談, but in ordinary English it just means "not paying attention."不過在一般英文裡它就只是「不專心」的意思。 It它 is also not the same as ignoring someone on purpose也不等於故意忽視一個人。

Ignoring can be a choice. Inattention is often the mind wandering, even when the person did not mean to be unkind.

Ignoring忽視 can be a choice可以是一種選擇。 Inattentioninattention is often the mind wandering常常只是思緒飄走了, even when the person did not mean to be unkind就算這個人並沒有想要不友善。