He hasn't been ti Japan before.__has__ ___he_ .
He didn't do homework yesterday._did___ ___he_ .
遵循前肯后否,前否后肯回答.
1.hasn't,后面has
2.didn't,后面did.
【欢迎追问,】为什么有Neither？SO不行吗？额，似乎你有些概念混淆。那个是在类似于Neither do I这样回答的句子里面出现的，和反义疑问句是两个概念。