Question

什么是be动词使役动词和情态动词?

Answer 1

使役动词：have let make

have sb do have sth done let sb do make sb do

情态动词：need should shall will would can could may might dare

情态动词后加原形 dare和need很特别,可作动词或情态动词,用法一样.

特例：sth need doing sth need to be done

be动词：am is are 及他们的过去式