为什么肯定用it is ,否定用he is

为什么肯定用it is ,否定用he is I,they,you,he,she,It肯定句,一般疑问句和否定句用现在时各造一句 I,they,you,he,she,It肯定句,一般疑问句和否定句用现在时各造一句 用i　he　she　it各造一组肯定 否定 疑问 回答句 I.we.he.she.it.you.you.they人称代词及am.is.are造句,用肯定句、一般疑问句、否定句、特殊疑问句急 Is this a boy?肯定回答用yes,it is.还是 yes,he is.否定回答呢？ He doesn’t think she is right,does he 这是个句子是否定转移,主句是肯定句,为什么反义疑问仍用肯定谢 了先 . that's not true,isn't it 为什么用isn't it 而不用is it 反义疑问句不是要求前肯后否定 前否后肯定吗？ 用I You She He It They We造含有have/has的句子变成疑问句做肯定和否定回答. He is a boy疑问句,否定,肯定 宾语从句的反义疑问句I think that he is not an honest boy,后面应该用肯定句还是否定句?不清楚的别误导! I am ok.I am a student.I am Gina Green.She is my teacher.一般疑问句怎么改?并做肯定与否定的回答尽快用he friend your no isn't this is连词成句 Is he going to swim?肯定回答 will you go there?否定回答 I am learning Engish变否定句 Cheng Long is a film start,isn't he?肯定回答可以用yes,it is 用英语改肯定句和否定句1:改肯定句2:改否定句.1 、 Is your English teacher tall?2、 I like grapes. 用英语改肯定句和否定句1:改肯定句2:改否定句.Is your English teacher tall?I like grapes. She is unhappy today的否定疑问句答语应该用肯定的还是否定的?为什么?很难很疑惑… It is a nice day（改为否定 He can paint句） Mary isn't a math teacher（改为否定句）I don't like bananas(改为肯定句）