i don"t know what to do (next) 和i don"t know how to do (next)的区别

i don"t know what to do (next) 和i don"t know how to do (next)的区别
i don"t know what to do (next) 和i don"t know how to do (next)的区别

i don"t know what to do (next) 和i don"t know how to do (next)的区别
what to do next 对
how to do next 不对
应该是how to do it next

可是答案上说是 how to do next ,一楼您答错了吧

what to do next 是下一个该做什么了
how to do next 是下一步怎么做

i don"t know what to do (next)我不知道接下来干什么
i don"t know how to do (next）我不知道接下来怎么做

第一个是我不知道接下来该干什么，第二个是我不知道接下来该怎么办

I don't know what to do next. 我不知道接下来做什么。
I don't how to do it next. 我不知道接下来该怎么做。