Even native speakers have trouble with these punctuation marks when writing English.

即使是以英语为母语人，在写英语时也会遇到使用这些标点符号难题。

Maybe that's why we toss these punctuation marks around like grammatical confetti.

双重功能之因, 让人摸门不着。

The last punctuation mark we are going to talk about today is the apostrophe.

我们今天要讲最后一个是撇号。

Before emoji, emoticons had let you express how you felt by using combinations of punctuation marks.

在 emoji 出现之前，表情符号可以让你通过使用标点符号组来表达你感受。

Punctuation marks and other things like spaces and indents help the reader understand the structure and organization of writing.

标点符号和其他空格和缩进能帮助读者理解文章组织结构。

As you can see, the placement of this punctuation mark can really change the meaning of a sentence.

你所见，这符号所在位置会改变整句话。

Robots with the size of punctuation marks can one day be used to move single cells or capture bacteria.

标点符号大小机器人有一天会被用来移动单细胞或捕捉细菌。

We used these terms to name our punctuation marks—although they actually refer to the clauses not to the dots themselves.

我们用这些术语来命名我们标点符号。尽管这些术语本是指停顿而非标点本身？

But first, let’s look at one of the most basic English punctuation marks.

但首先， 让我们看一下最基本英语标点符号之一。

It's a very popular punctuation mark in universities, and academic writing, and so on.

它在大学和学术写作中非常流行。

Period - we're not talking about the pronunciation mark, no - the punctuation mark either.

句点 - 我们不是在谈论发音标记， 不 - 标点符号。

So there are four reference points for every punctuation mark.

因此，每种标点符号都有四个参考依据。

[David] It's weird, it's like the Bermuda Triangle of punctuation marks.

- [大卫] 这很奇怪，就像标点符号百慕大三角。

[Voiceover] So this is a superhero punctuation mark.

- [画外音] 所以这是一个超级英雄标点符号。

Do you remember what kind of punctuation mark comes at the end of a question?

你记得问题结尾标点符号是什麽吗?

Ask the student what punctuation mark comes at the end of both sentences.

问学生这两个句子结尾标点符号是什麽。

A sentence begins with a capital letter and ends with a punctuation mark.

句子以大写字母开头, 以标点符号结尾。

And to be persuasive, you need to be understood. And these little punctuation marks helped the speaker to deliver their text more effectively.

要想说服别人，你得先让别人明白你。这些小标点符号帮助说话人更有效地传递信息。

When we read the examples in this lesson, we will say the punctuation marks out loud so listeners can understand where they belong.

当我们阅读这节课例子时，我们将大声读出标点符号，以便听众了解它们位置。

And the dash is one of my favorite punctuation marks, because it's so versatile.

破折号是我最喜欢标点符号之一，因为它用途广泛。