英语里面动名词跟名词在句子中的作宾语的语法结构是一样的吗?

英语里面动名词跟名词在句子中的作宾语的语法结构是一样的吗?
比如有afford sth.我在牛津字典上查到的用法.但是没有afford doing sth只有afford to do sth.可以有doing sth这个动名词结构吗?doing sth可以等价为一个名词吗?

有些动词后接 to do 作宾语,有些后接doing作宾语 ,究竟接doing 还是to do,取决于前面这个动词的用法,从这个角度对动词的归纳可参考如下,希望有所帮助：
1.一般只接不定式作宾语的动词/动词词组:
hope,refuse,decide,expect,agree,manage,offer,pretend,promise,plan,afford,
would like/love/prefer等
eg.They hope to findnew resources for mankind.
I want to write to you—but don’t have your address.
2.只接-ing分词作宾语的动词:
admit,allow,imagine,delay,consider,mind,understand,avoid,enjoy,practice,miss,finish,keep,suggest,feel like,cannot stand,put off,keep on,look forward to 等.
eg.I enjoy listeningto music.
He often practicesplaying the piano in the evening.
He is fond of playingbasketball.
He has given upsmoking.
Would you mind turning down your radio a little,please?
3.可接不定式和-ing分词,且意义变化不大的动词：
love,hate,prefer,begin,,start,continue等 (dislike,feel like)
Examples::
I like to swim today.
I like swimming verymuch.
I started learning English when I was ten.
It began to rain when I got home last night.
I continue to feel sick.
I hate to see you crying.
4.可接不定式和-ing分词,意义有较大变化的动词：
动词 后接不定式的意思 后接-ing分词时的意思
need 需要做… 需要被…(=need to be done)
want 想要做… 需要被…(=want to be done)
remember 记得要去做… 记得曾做过…
forget 忘记要去做… 忘记曾做过…
regret 很遗憾要做… 后悔做了…
mean 打算/有意做… 意味着…
stop 停下来去做…(另一件事) 停止正在做的事…
try 努力去做… 尝试做…
go on 接着做…(另一件事) 继续做(同一件事) …
eg.He forgot to close the door when he left.(忘了去做某事,to do未发生)
I’ll never forget winning my first gold medal.(忘了做过某事,doing已发生)