(1)表示空间上的远近：this和these表示近。that和those表示远。

No one had worked in this place for ages.

已经好多年没有人在这个地方工作过了。

I don't like the look of those clouds.

我不喜欢那些云的样子。

(2)表示时间上的远近

These days the Olympics must mean the best.

现今，奥林匹克运动会肯定是水平最高的。

At that point he became worried.

就在那时，他变得担心起来。

注意：that和those有时可以用来代表前面刚提到过的名词以避免重复。

The best cotton is that from Xinjiang.

新疆的棉质量最好。

指示代词的固定搭配：

like this 像这样

that's all right 没关系

more than that 更重要的是

for all that 尽管如此

So that's that. 就是这样。