您给的例句的确是不定式作宾语。

在章振邦教授编著的《新编英语语法》中指出：能直接跟有to不定式结构作宾语的动词，常见的有：afford, agree, aim, apply, ask, arrange, choose, claim, decide, decline, demand, desire, determine, expect, hope, learn , long, manage, offer, pretend, promise, refuse, seek, threaten, want, wish等。例如：

He agreed to smoke no more cigarettes.

She applies to work only at weekends.

I’ve arranged to meet him at ten o’clock.

She asked to see the manager.

Of course we hope to get a few more.

He pretended not to see me.

I expect to be back on Sunday.

She promises to make no mistakes at all.

What did he say he wanted to do?

She longed to see him again.

He left without even troubling to say goodnight.