Hamlet enjoyed making fun of Polonius.

老师，make 在句子中是系动词吗？

句子语法结构分析如下

主语：Hamlet

谓语：enjoyed

宾语：making fun of Polonius

以上making fun of Polonius动名词短语作谓语动词enjoyed的宾语

make fun of 为动词短语，意思，嘲弄， 取笑; 开玩笑; 排调; 调笑

I'd make fun of her dress and imitate her speech.  

我会拿她的衣着开玩笑，并模仿她说话。

It is wrong to make fun of a cripple.  

嘲笑残疾人是不对的.

It was miserable of you to make fun of him.  

你取笑他,这是可耻的.

Don't make fun of the disabled!  

不要戏弄残疾人!

It's cruel to make fun of a cripple.  

取笑瘸子是残忍的.

Don't make fun of him.  

别拿他开玩笑.

Don't make fun of us.  

别拿我们打哈哈.

(备注：make fun of 只能作谓语 ,变成making fun of 只能作主语，宾语，表语了。）