1.Be动词的用法 Be动词有三个 它们是is、am、are I跟am,you跟are is连着他她它 单数名词用is 复数名词都用are I am a boy. You are a teacher. He/She/It is a.... This pen is red. These pens are blue 2.一般疑问句口决 会一般疑问句,变疑问 be前提,句末问号莫丢弃 变否定,更容易,be后not加上去 针对I来提问,变you是常理 肯定句:I am a boy. 疑问句:Are you a boy? 否定句:I am not a boy.