as is one's wont
いつものように
As it happened, I didn't have enough money with me.
あいにくお金を十分持ち合わせていなかった
as light as air
空気のように軽い
(for) as long as I live
生きているかぎり
as long as my life lasts
命の続く限り
As many as ten students failed the exam.
10人もの生徒が試験に落ちた
as matters stand
現状では
as mentioned above
先に述べたように
as mentioned above=as above mentioned
前述のとおり(◆文章の中で使用)
as mentioned below=as below mentioned
後述のとおり(◆文章の中で使用)