主格:I,he, she, it, you, they 1.I am a teacher. 2.He is a teacher. 3.You are teachers. 宾格...
主格:I,he, she, it, you, they 1.I am a teacher. 2.He is a teacher. 3.You are teachers. 宾格...
Be 动词的否定 在is , am , are , was , were 后面加not. 缩略式isn't , am not , aren't , wasn't , were...
Be 动词的形式 be , is , am , are , was , were , being , been is , am , are : 一般现在时的be动词 1.Th...
五种基本句式 (主语:问的是什么 || 谓语:表示动作 || 宾语:主体执行的动作 || 系: || 连接作用的动词 || 表语: 描叙主语性质,特点的词 宾语: 动作执行...