副詞 like mad:

1. with great speed or effort or intensity
   同義詞：like hell, like crazy, like sin, like thunder, like the devil

1. Terry ran like mad to catch the bus.
   特里跑得飛快，去趕公共汽車。
2. Drove like mad.
   發(fā)瘋似地駕車
3. I'm advertising like mad for a housekeeper or a maid, but they don't want to know, do they?
   我拼命地登廣告征聘一個女管家或者女傭，可是她們存心不理睬這回事，是不是？
4. He was very frightened and clinging on like mad.
   他怕極了，手一直死死抓住不放。