•For no reason - 無緣無故, 毫無理由、無端, 莫名其妙;
•For a reason – 不是無緣無故的，是有原因的，
•There is no such thing (person) as … - we say this to emphasize that it (the person) does not exist or is not possible. 沒有（…）這樣的事情／人
•At sb.’s expense / at the expense of sb. - making another person look silly; 捉弄；拿…開心
•Cross the line - 越界，做得過火, 過分了；
- Be about to do - to be going to do something very soon; 剛要,正要; 我正準備…
•End up doing (being) - to reach or come to a place, condition, or situation that was not planned or expected; 最終, 到頭來,最後變成, (不在計劃意料中的結果，沒想到最後)
