同学你好，该知识点来自沪江网校《新概念英语2、3、4册连读【双11专享班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
只是词形比较像，意思上没有联系。

[w]dull[/w] 沉闷的; 乏味的
I felt she found me boring and dull.
我觉得她认为我令人厌烦而又乏味。

[w]full[/w] 装满的
Once the container is full, it stays shut until you turn it clockwise.
该容器一旦满了就会保持关闭，直到你将其按顺时针方向旋转。

[w]gull[/w]欺骗; 愚弄
The man tried to gull the old woman out of her money.
那人试图骗取老妇的钱财。

[w]hull[/w]船体
The hull had suffered extensive damage to the starboard side.
船体右舷遭到大面积损坏。

[w]lull[/w]间歇期
There was a lull in political violence after the election of the current president.
现任总统选举结束以后，政治暴力曾暂时平息。

[w]mull[/w] 斟酌
Last month, a federal grand jury began mulling evidence in the case.
上个月，一个联邦大陪审团开始仔细斟酌该案的证据。

[w]null[/w]无法律效力的
A spokeswoman said the agreement had been declared null and void.
一位女发言人说那个协议已被宣布为无效的。

[w]pull[/w]  拉; 拔
Erica was solemn, pulling at her blonde curls.
埃丽卡表情严肃，拉扯着她金黄色的卷发。

祝同学学习进步~