否定 The boy isn't (is not) playing basketball
一般疑问 Is the boy playing basketball
肯定回答 Yes,he is.
否定回答 No,he isn't
对the boy 提问 What is the boy doing?
2
She is not cloing the door now
顺便说下 否定一般就是在be动词后加not
否定 The boy isn't (is not) playing basketball
一般疑问 Is the boy playing basketball
肯定回答 Yes,he is.
否定回答 No,he isn't
对the boy 提问 What is the boy doing?
2
She is not cloing the door now
顺便说下 否定一般就是在be动词后加not