'And that' 是一个常用的英语短语，在表达中起到连接上下文的作用。它可以用于不同的语境中，可以表示原因、结果、补充说明等含义。下面我们来详细了解一下 'And that' 的用法。

1. 表示原因：在句子中， 'And that' 可以用来引出一个前提或原因，以便进一步阐述。例如：

- She spends a lot of time on her studies, and that's why she always gets good grades.

- He works hard every day, and that's how he managed to achieve his goals.

2. 表示结果： 'And that' 可以用来引出一个结果或结论，以便进一步解释。例如：

- He missed his flight, and that's why he arrived late for the meeting.

- She practiced every day, and that's how she became a skilled musician.

3. 表示补充说明：在句子中， 'And that' 可以用来补充说明一个事实或观点。例如：

- The company has a strict hiring policy, and that means they only hire the best candidates.

- The team worked hard to prepare for the competition, and that really paid off in the end.

总之，'And that' 是一个非常有用的英语短语，可以帮助我们更好地表达自己的想法和观点。它可以在句子中起到连接上下文的作用，表达原因、结果和补充说明等含义。在日常英语交流中，我们可以灵活运用这个短语来提高自己的表达能力。