e动词除外,所有的感官动词（feel,look,smell,seem,taste等） 表示变化的（become,grow,get,fall,go,come,run） 保持的动词(keep,stay,remain等)都用作系动词 He is an English teacher.主系表结构 Are you feeling better today?主系表结构 Your suggestion doesn't sound practicable.(你的建议听着不切合实际) 主系表结构 You had better speak aloud.主谓结构 I saw a watch on the ground.主谓宾结构
