clever的比较级和最高级有两种：

1、cleverer ，cleverest。

2、more clever ，most clever。

3、clever加er和est还是加more，most都可以。

拓展资料

clever

1、He's a very clever man 

他非常聪明。

2、A colleague of mine in Milan devised the following very clever little experiment. 

我在米兰的一个同事设计了下面这个非常巧妙的小实验。

3、His many admirers describe him as clever: his enemies as too clever by half. 

崇拜他的人很多说他聪明；恨他的人则说他聪明过了头。

4、My sister was always a lot cleverer than I was 

我妹妹向来比我聪明许多。

5、Her mother was clever at many things. 

她妈妈对许多事情都很精通。

6、You really are quite a clever little thing 

你真是个聪明的小家伙。

7、This child is quite clever. 

这孩子挺聪明。

8、She seems an unusually clever girl. 

她看起来像是一个异常聪明的姑娘。

9、She is not very clever but she is painstaking. 

她虽然不很聪明，但很刻苦。