Hello! This week on Ask a Teacher we answer a question from Tien in Vietnam.

大家好！本周的《名师答疑》，我们回答来自越南的田的一个问题swoKa+=zd*0JFwcLZ。

Dear VOA, I am writing to ask a question about the difference between "drop in " and "drop by." Thanks in advance.

亲爱的美国之音，我写信是想问drop in和drop by之间有什么区别ZmU_]bm1.9pE@R。提前谢谢你8i22dAf1KZG|]9Wq*.1。

Dear Tien, thank you for writing to us.

亲爱的田，谢谢你的来信]b2]bahP+(G18H3k,h。

Both of these expressions mean to pay someone or something an informal visit.

这两个短语的意思都是非正式地拜访某人或参观某物I|!F*)idWhdC。

You may say, you "dropped by" someone's house if you did not have an invitation but decided to visit them because you were in the neighborhood.

如果你没有收到邀请，但因为刚好在某人住所附近，所以决定去拜访他们，你就可以说你顺道拜访了他们pE1APh6I7MJ。

But there is a small difference between the expressions that may help you know when to use them.

但两个短语有一点细微差异，可以帮助你弄懂什么时候使用哪一个0Ly8@TQYBbM。

Let us begin with "drop by."

我们先讲drop bytZ4K+GTi2TTQ]。

It is a two-part phrasal verb, which means it combines a verb and an adverb.

这是一个由两部分组成的短语动词，表示它由动词和副词组合而成e,rXcAoLI8le&Wpy4T。

The verb is "drop," which usually describes something falling in small amounts.

动词是drop，通常用来描述一些少量的东西落下8j8O+qPM.lE。

The adverb is "by" which means "near."

副词是by，意思是“近”zD6dPGCh5JCivfH%ig。

Here is an example of how to use it: I asked James to drop by the café tonight to hear our music.

这里有一个如何使用它的例句：我让詹姆斯今晚顺道去咖啡馆听我们的音乐qA7-twJ|w%Bak-gxKW)!。

In this example, when you go to a café, you do not need an invitation.

在这个例句中，当你去咖啡馆时，你不需要邀请zj,^yGPRWO;dV]H8AE。

You can enter for a short time or even stay outside of the building and still say you "dropped by."

你可以进去一小段时间，甚至只是呆在大楼外，但仍然可以用dropped byl=OF)%_zG@hniAl。

I found that people are using "drop by" to talk about the places they visit on a computer, as well as in person.

我发现，人们不仅用drop by来谈论亲自到过的地方，也用来表示在电脑上访问过的地方(!TGEoDS.v。

Here are some examples: Please drop by my other blog on photography.

这里有一些例句：请访问我另一个关于摄影的博客8&TL8PfME1F-。

Drop by every Monday for a new Mainly about Boats column.

欢迎每周一阅读《舟船纪事》新专栏oc%HM6KB*k;sJB1。

Next, we can look at "drop in."

接着，我们可以讲讲drop in&gQS)hZExs.y(-=d。

This expression can be a two- or three-word phrasal verb.

这个短语可以是两个或三个单词构成的短语动词~UT^kaTF92。

The two-word form, "drop in," can be used like "drop by" with one difference – if you go to a place and plan to enter it, you would say:

两个词的drop in和drop by用法相同，但有一点不同——如果你去一个地方，打算走进去，你会说：

I was passing your street and I thought I'd drop in--do you have time for tea?

我路过你那边的那条街，想顺便过来一下——你有空喝个茶吗？

If you did not plan to enter the house or building, you could use "drop by," as in:

如果你不打算进入这所房子或大楼，你可以用drop by，例如：

I will drop by tomorrow and put the letter under your door.

我明天会顺便来一趟，把信放在你家门下面J3Ovik59B%。

The three-word phrasal verb form is "drop in on."

三个单词的形式是drop in on)cMn2HieO,(n%0yE。

You might hear it used this way: Every now and then he would drop in on Grandmother for a quick chat.

你可能会听到它是这样用的：他会时不时地顺便看看奶奶，简单聊两句HGU8IoD~IH)1rC)E。

You can tell from this final example that we use "drop in on" when we are talking about entering someone's home:

从最后一个例句可以看出，当我们谈论进入某人的家时，我们用drop in on：

The middle of the night is a bad time to drop in on a friend, but we could see that Megan needed help.

半夜去朋友家里不太好，但我们可以看出梅根需要帮助cFMvThtHFe。

I hope this helps you understand when to use these expressions, Tien.

田，希望这能帮助你理解什么时候该使用这些表达-SlBe=JXj3E!Jt!]^。

Maybe you can practice them next time you drop by an English class!

也许你下次去上英语课的时候可以练习一下！

And that's Ask a Teacher. I'm Jill Robbins.

以上就是本期《名师答疑》v[#[DeJVI7gWWbv;N。吉尔·罗宾斯为您播报_cnce@+YbUP;r1(a。