low的比較級lower為什麼不雙寫w再加er

因為low不是重讀閉音節，ow是字母組合: lower

He belongs to the lower middle class.    他來自中產階級下層。

The lower berth is more convenient.    下鋪更為方便。

He would never lower himself by taking bribes.    他決不會貶低自己的身分接受賄賂的。

We have to lower our expenses.    我們得減少開支。

They lowered at each other without saying anything.    他倆無言以待地互皺眉頭。