19.ThereasonwhyIwassadwas.(understand)我很伤心的原因是他不理解我。

Question

19. The reason why I was sad was                 . (understand)

我很伤心的原因是他不理解我。

Answer 1

19. that he didn't understand me考查表语从句。表语从句位于主句中的连系动词之后。引导表语从句的词有从属连词that whether asthough(if); 连接代词who what which whom whose what?ever whoever whomever whichever等;连接词when where why how however whenever wherever等。可以接表语从句的连系动词有be look remain seem等。本句从句中什么成分也不缺，所以由that引导。表语从句中的that不能省。