by的同音词是buy和bye，音标都是[baɪ]。例句：I am sorry that I forgot to buy the milk.对不起，我忘了买牛奶。Thank you so much. Bye.非常谢谢你，拜拜。
by的同音词：
buy, bye
英 [baɪ] 美 [baɪ]
vt. 购买；买得起；获得；贿赂；相信
n. 购买；所购的物品；合算的东西
例句：
1.Money can't buy you happiness.
金钱不能为你买到幸福。
2.They only buy the best.
他们只买最好的。
3.I set out to buy food.
我动身去买吃的。
4.Would you buy a used car from this man?
你会向这个人买辆二手车吗？
5.I am sorry that I forgot to buy the milk.
对不起，我忘了买牛奶。
6.Where did you buy that dress?
那件连衣裙你是在哪里买的？
7.I've sent Tom to buy some milk.
我叫汤姆去买牛奶了。
8.You can buy your stamps at the post office.
你可以在邮局买邮票。
9.Don't buy that coat—it looks cheap and nasty.
别买那件外套—一看就是便宜货。
10.It's cheaper to buy in bulk.
大批购买便宜些。
11.Try the shoes on before you buy them.
鞋子要先穿上试一试再买。
12.It was an impulse buy.
这是一时心血来潮买的。
13.I usually buy sliced bread – it's less bother.
我通常买切片面包–这样可以少些麻烦。
14.Talk about mean! She didn't even buy me a card.
这才叫吝啬呢！她连张贺卡都没给我买。
英 [baɪ] 美 [baɪ]
int. 再见
例句：
1.You'd better drive carefully. Bye.
你最好小心开车。再见。
2."Anyway, I'd better let you have your dinner. Bye."
"好了，我最好让你吃晚餐了。再见！"
3.Putting on her pretty hat, she left her room to say good-bye to Clara.
她戴上漂亮的帽子，离开房间，向克拉拉告别。
4."Good-bye, Heidi," was the reply.
"再见，海蒂。"对方回答道。
5.She said "Good-bye" to Heidi and "Farewell" to the uncle, and started down the mountain.
她对海蒂说了声"再见"，对老头儿说了声"永别"，然后开始下山。
6."Hello, Wendy, good-bye," he said.
"喂，温迪，再见。"他说。
7.Now, good-bye, Toad, and good luck.
好了，再见，托德，祝你好运。
8."Good-bye," said the Rats; and they went home.
"再见吧。"耗子说。然后他们就回家了。
9.She waved bye-bye and got into the car.
她挥手道别后就钻进了汽车。
10.He stood mournfully at the gate waving bye bye.
他悲伤地站在门口，挥手说再见。
11.Thank you so much. Bye.
非常谢谢你，拜拜。
12.By-the-bye, what became of the baby?
顺便问一下，那个宝宝怎么样了？
13.Bye-bye, see you later.
再见，回头见。
14.Thanks, I will. Bye-bye.
谢谢，我会的。拜拜。
