less than后面可接形容詞、數詞等，意為“不到，小于，少于”，具有否定意義。less than連起來意思是“少于，不多于”，中間加形容詞表示比較級。

less than的用法

1、less than 后面接形容詞、副詞時,意為不;很少;不到,具有否定意義。

例句：

(1)We were busy and less than delighted to have company that day.

那天我們很忙,不高興有客人來。

(2) The young man is less than twenty years old.

這個年輕人不到 20 歲。

2、less than 意為不像;不是。

例句：

Joseph is less honest than his brother.

約瑟夫不像他兄弟那樣誠實。

Less than的相關搭配

1、no less than不亞于，竟達??之多

例句：

The audience was no less than five thousand. 聽眾有五千人之多。

That hotel probably costs no less than 20 dollars a night. 那間旅館的住宿費大約要20元一晚呢。

2、no less .. than不少于,不亞于

例句：

He is no less a person than a minister他的身分不亞于部長。

3、not less than不比??差，至少

例句：

I'll stay here not less than three days. 我將待在這里至少三天。

4、not less...than至少和?一樣

例句：

She is not less beautiful than Mary她至少和瑪麗一樣美麗。

5、no/not any less

例句：

Are we all not any less than 50th cousins?