be good at精通於
be annoyed at對……煩惱
be angry at對(事)……發怒
(take)aim at瞄準
laugh at因……而發笑
stare at盯著看，凝視
at the best充其量
at first開始
at large自由地
at least至少，起碼
at length最後，終於
at once立即，馬上
at present現在
at rest休息，靜止不動
at times間或，有時
He was angry at his brother's remark.
他對他兄弟的批評很惱火。
I don't know him but he has been staring at me for ten minutes.
我不認識他，但是他盯了我足有十分鐘。
The foreign countries'attempt at a blockade of the port was unsuccessful.
外國試圖對這個港口實施封鎖，但沒有成功。
I know I am at fault.
我知道我錯了。
The escaped prisoner is still at large.
那逃犯仍逍遙法外。
He is at present away on his holidays.
他現在到外地度假去了。
t
careful about小心
particular about對……講究
careless about粗心
doubtful about對……懷疑
sure about肯定
concerned about擔心
a complaint about抱怨，叫屈
bring about導致，引起
care about關心，介意
leave about亂放，亂扔
fuss about大驚小怪
anxious about擔心，想念
例如：
How did it come about?
那事是怎樣發生的?
She is crazy about pop music.
她對流行音樂著了迷。
English people are always making complaints about their weather.
英國人老是埋怨天氣不好。
He is enthusiastic about the music of Brahams.
他熱衷於布拉姆斯的.樂曲。
Harry likes eating very much but he isn't very particular about the food he eats.
哈里很愛吃，但對他所吃的食物倒並不講究。
