请问下面句子的成分Mr.Brownhasalargefamilytokeep.tokeep这个非谓语动词是做定语还是宾补?

Question

请问下面句子的成分
Mr.Brown has a large family to keep.to keep这个非谓语动词是做定语还是宾补?

Answer 1

定语用来限定、修饰名词或代词的,定语是对名词或代词起修饰、限定作用的词、短语或句子,汉语中常用‘……的’表示,定语基本上是作形容词用,主要用形容词来充当,此外,名词、代词、数词、副词、介词短语以及动词不定式（短语）、分词和定语从句等都可用作定语,不定式作后置定语时,它与前面的被修饰词存在动宾关系,如：
I have a lot of work to do (to do a lot of work ) .
The boy to write this letter needs a pen./写这封信的男孩需要一支钢笔.
The boy to write this letter is Tom./将要写这封信的男孩是汤姆.
There is nothing to do today./今天没有事要做.
而在英语中有些及物动词,接了宾语意义仍不完整,还需要有1个其他的句子成分,来补充说明宾语的意义、状态等,称为宾语补足语,简称宾补.不定式作宾补时,宾语与它是主谓关系,如：
He asked me to clean the room.(I clean the room)
所以我认为“to keep"是定语,类似There is nothing to do today这句话