We need an actor today,need在此处做什么动词

They work in that restaurant.(改为否定句) We need an actor today. Need做行为动词修饰什么 need做情态动词 be in need of sth,和做动词的need,有什么区别,个在什么情况下用, need在做情态动词和使役动词时,含义有什么不同? need做情态动词和普通动词有什么区别? need在做助动词和在做情态动词时有什么区别? what we need+什么 need能否做情态动词? Need we finish the work today? need在什么情况下,做情态动词,（除了选择题外,怎么判断） need做实词和情态动词有什么区别