Things change with time.
事情会随着时间而变化。
Everything changes from the past to the future.
从过去到未来，一切都在变化。
The story of events that happened in the past is called history.
过去发生的事件的故事叫做历史。
History is not fiction.
历史不是虚构的。
History shows us how things change.
历史告诉我们事情是如何变化的。
The past is different from the present.
过去与现在不同。
In the past, you were smaller.
过去，你更小。
In the present, you are getting bigger.
现在，你正在变大。
The city you live in also changes.
你所居住的城市也会发生变化。
In the past, your city was small and not many people live there.
过去，你的城市很小，没有多少人住在那里。
In the present, your city is bigger and there are more people.
现在，你的城市更大，人口更多。
If we want to see changes in history, we can use a timeline.
如果我们想看到历史的变化，我们可以使用时间线。
A timeline can help us to understand when things happened.
时间线可以帮助我们了解事情发生的时间。
Our history is full of facts telling us what, when and where things happened.
我们的历史充满了事实，告诉我们事情发生了什么，何时何地。