by和bye（再見）同音，e在此處不發音。

by的同音詞buy、bye

例句如下

1.

He arrived at the solution by a simple process of deduction.

他透過一番簡單的推理得出瞭解決問題的方法。

2.

It works by remote control.

它透過遙控工作。

3.

She'll have had the results by now.

她現在應該知道結果了。

同音字是：buy

by+地點名詞。表方位，意為：“在…旁邊”。如：by the lake/river/tree/window/door等。

注：有時可表:“從…旁經過”,多與動詞go/walk/pass等連用。 擴充套件資料

　　另外by的用法還有以下幾種：

　　一、by+時間名詞。意為：“到…時（已發生某事），此時謂語多用完成時；最晚、不遲於…，在…之前”。如：by now/then/this time/next Friday/the end of/three o`clock等。

　　By the end of last year,another new gymnasium had been completed.去年年底，又有一座新體育館峻工了。

　　The train leaves at 6:00 pm.So I have to be at the station by 5:40 pm at the latest.(NMET97)火車下午六點開，所以最晚我得五點四十趕到車站。