The other boys often laugh at David.该被动语态,
问题描述：
The other boys often laugh at David.该被动语态,
答
David is often laughed at by the other boys.原句的宾语为David,作被动语态的主语,原句的谓语动词laugh at变为被动结构为：be laughed at(ofen laugh.体现一般现在时,故其结构为is laughed at),原句的主语为the ot...