在句子中做插入语。
翻译为‘顺便说一下，顺便问一句，呕，对了。
。
。
等等。
表示在说某一件事情的时候，突然想起另一件事。
I think the TV show last night was interesting. By the way, when did you go to bed last night? 我看昨天晚上的电视节目很有趣。
喔，顺便问一下，昨晚你几点睡的？ Your son hasn't come back yet. By the way, he wanted me to tell you that he has been well. 你儿子还没回来呢。
幄，还有，他让我转告你他一直挺好的。
Today, we don't have any boiled water. So if you are thirsty, you can eat a couple of pears. By the way, we probably have no pears in the fridge. You had better get some from the supermarket. 今天我们没有烧开的水了。
你要是口渴的话，就吃几个梨。
喔。
想起来了。
冰箱里可能没有梨了。
你最好去超市买点回来。
by后面加人名是什么意思
