is he jack 与Are you HelenHelen也不是复数为啥要用are呢,不用is呢,用are对吗

Is he jack 与Are you jack有什么区别 Are you jack 下一句为什么是 yes he is Are you jack 下一句为什么是 yes he is is he jack 与Are you HelenHelen也不是复数为啥要用are呢,不用is呢,用are对吗 1.are you Mary?(否定回答) 2.Is he Jack?(做肯定回答) Is he Jack?Are you Helen?的成分有哪些 哪些是主语.谓语. is he jack? Is he Jack? Jack is very interested in English and music.A so he is so you are B so he is so are youJack is very interested in English and music.A so he is so you are B so he is so are you选B,翻译成他也是,你也是为什么不可以写错了，C so is he this is sam speaking.are you jack哪有错 This letter is .jack jack' he Hi ______?----This is jack A.Who are you B.Are you Jack C.Speak to Jack D.Who is that说明理由 He is n___ Jack.He is Tom. He is jack,my brothers. He is w ____ Jack he is a jack-leg 4._________ is my brother._________ name is Jack.Look!Those stamps are _________.( he ) he tells jack that it is hard work.does the sea frighten you?you boat is very small.doyou know your friends well?are ther good at sailing?he asks.怎么翻译