off and on的用法和樣例：
例句
- He had been work here,on and off,for two years.
他在這兒斷斷續續工作了兩年。 - I began to write intermittently and spasmodically.
我開始斷斷續續地寫了起來。 - The rebels made regular attacks on the railways.
叛軍不時地襲擊鐵路。 - He looked at the girl and smiled.
他看著那個姑娘並不時地朝她微笑。
辭彙搭配
- on and off 斷斷續續地
- stand off and on 一忽兒接近海岸,一忽...
- play off and on with 一會戴上一會摘下...
