在含有比較級的句子中，that作為比較對象，代指單數或不可數名詞，而those代指可數名詞複數。例句：

The weather in Beijing is colder than that in Guangzhou.

北京的天氣比廣州要冷一些。

分析：that代指the weather。

The students in our class are much taller than those in your class.

我班的同學要比你們班的同學個子高很多哦。

分析：those代指 the students

than that是固定搭配

than that釋義：

比這

例句：

I like this coat better than that one.

我更喜歡這件大衣，而不是那件。

Can't you think up a better excuse than that?

難道你就想不出一個比這更好的借口？

The timbre of the violin is far richer than that of the mouth organ.

小提琴的音色比口琴的音色豐富得多。

不是固定搭配。than 是比較級的標誌詞，than that表示比那個……，than this表示比這個……，不是固定搭配

在比較級的句子中，than後的one 和that 沒有區別。不過one前要加the

例如：The boy is taller than the one over there.

The boy is taller than that over there.

這個男孩比那邊那個男孩高。

可見，在比較級中，同類事物比較，than的後面可以用the one或 that代替前面的單數名詞。

依此類推，than的後面還可以用the ones或 those代替前面的複數名詞。

例如：These books are more expensive than the ones /those I bought yesterday.這些書比我昨天買的那些書貴。