If someone is inattentive, they are not giving enough attention to a person or a task. A driver can be inattentive; a classmate can be inattentive during a lesson; a friend can be inattentive while you are talking.

If someone is inattentive如果一個人inattentive，they are not giving enough attention to a person or a task表示他們沒有給一個人或一件事足夠的注意力。A driver can be inattentive開車的人可以是inattentive的；a classmate can be inattentive during a lesson同學上課時可以是inattentive的；a friend can be inattentive while you are talking朋友跟你講話時也可以是inattentive的。

It is the adjective that matches inattention. Teachers write it on reports.

It is the adjective that matches inattention它是跟inattention（不專心）對應的形容詞。Teachers write it on reports老師會把它寫在成績單上。

Doctors also use inattentive for a type of ADHD where the main difficulty is focus, not bouncing around. Though actually, in ordinary English it just means “not paying enough attention,” with no medical meaning unless the context is medical.

Doctors also use inattentive for a type of ADHD醫生也用inattentive來稱一種ADHD類型，where the main difficulty is focus, not bouncing around那種主要困難是專注力，不是坐不住。Though actually, in ordinary English it just means 'not paying enough attention,'不過其實在一般英文裡，它就只是「沒有給足夠的注意力」的意思，with no medical meaning unless the context is medical除非上下文是醫療相關，不然沒有醫學意涵。

It is a little formal; in speech we often say “not paying attention” or “distracted.” It does not, by itself, mean rude. Someone can be inattentive because they are tired, worried, or lost in thought.

It is a little formal它有點正式；in speech we often say 'not paying attention' or 'distracted.'口語裡我們常說「not paying attention」或「distracted」。It does not, by itself, mean rude它本身並不表示沒禮貌。Someone can be inattentive一個人可能inattentive because they are tired, worried, or lost in thought因為累了、擔心，或在想別的事情。