在英语中，通常使用句号（英式英语称“full stop”，美式英语称“period”）、问号（question mark）和感叹号（英式英语称“exclamation mark”，美式英语称“exclamation point”）来结束句子。
1. 紧接着句号、问号和感叹号的新句子的开头首字母需要大写。比如：
- They'd have gone bust if they hadn't snagged that contract from their rivals. It was quite a coup for them.
要不是他们从对手那儿抢到了合同，他们早就破产了。这对他们来说真是成功的一着。 - Why bother to write? We'll see him tomorrow.
还费事写信干什么？我们明天就见到他了。 - Now they want to tax food! Nobody knows what will happen next.
他们竟然要对食品收税！没有人知道接下来将会发生什么事。
2. 在语法上不完整的句子结尾一般不用句号、问号和感叹号。但有时会为了表示强调而使用句号和大写字母把短语或分句隔开。比如：
- 正确用法：We will get your order to you as soon as possible.
错误用法：We will get your order to you. As soon as possible.
中文翻译：我们将会把您的订货尽早送达。 - 常规用法：People are sleeping out in the streets in USA in the 21st century just because there is extreme unfairness in society.
强调用法：People are sleeping out in the streets. In USA. In the 21st century. Just because there is extreme unfairness in society.
中文翻译：人们露宿街头。就在美国。就在21世纪。就因为社会存在着极度的不公平。
3. 在许多缩略语的后面可以接句号，不过这一用法在现代英式英语中通常被省略，而在美式英语中保留。比如：
- 中文原文：谢谢你，主席先生。
英式用法：Thank you, Mr Chairman.
美式用法：Thank you, Mr. Chairman.
4. 在间接疑问句的后面使用句号，而不使用问号。比如：
- I asked him when he'd be back to pick me up.
我问他什么时候回来接我。
