变疑问，往前提，句末问号莫丢弃，变否定，更容易，be后not莫忘记，疑问否定任你变，这什么意思

变疑问，往前提，句末问号莫丢弃，变否定，更容易，be后not莫忘记，疑问否定任你变，这什么意思I 用am , you 用are ,is 连着他（he）她（she）它（it）。单数统统用is，复数一律都用are. 变疑问，往前提，句末问号莫丢弃，变否定，更容易，be 后not莫忘记，疑问否定任你变，句首大写莫迟疑。

变疑问，往前提，句末问号莫丢弃，变否定，更容易，be后not莫忘记，疑问否定任你变
例句: Mary is a good girl.
变疑问，往前提 = Is Mary a good girl? (be 动词 is 放句前)
变否定，更容易，be后not莫忘记 = Mary is not a good girl. [ is + not]
疑问否定任你变 = Who is a good girl? (对 Mary 提问) ; How is Mary? (对 a good girl 提问)
I 用am , you 用are ,is 连着他（he）她（she）它（it）。单数统统用is，复数一律都用are. 变疑问

例句:
I am tired. ; You are tired ; He is tired. ; She is tired. ; It is tired.
复数一律都用 are
We are tired. ; You are tired. ; They are tired.

你好！ be 动词的用法 仅代表个人观点，不喜勿喷，谢谢。