I don't know what to do next,这句话哪里错了,为什么啊不对,是把what改为how为什么错?

问题描述:

I don't know what to do next,这句话哪里错了,为什么啊
不对,是把what改为how为什么错?

但从这一句看是没错的.是否有上下文情景

I don't know what to do next 这个句子是正确的.
what 作do的逻辑宾语,而how 是副词,不能作do的宾语,所以I don't know how to do next.错误,应该改为:I don't know how to do it next.