out of work 是介词短语 （介词+名词） 。
1. 介词及介词短语不是动词，不能做谓语动词。
2. 介词及介词短语做表语，定语及状语：
如：
she is out of work 她在失业当中。（表语）
she has been out of work for 6 months. 她已经失业6个月了（表语）
the man in the car is my husband. （定语）
she studies in China. （状语）
out of work 介词短语 = unemployed， 可以做表语也可以作宾补：
He is out of work.
His injury has put him out of work
不是
不能当动词用
如
He is out of work.
out是副词。
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