what they should do，是他们应该干什么。可是为什么不是 what should they do？

ps：英语题上的，要求改同义句。怎么改？
what they should do

ps:回答好的加分。
what they should do
和what should they do不一样吧。我觉得是问句嘛，第一个怎么怪怪的？
谁能帮我解释，其实我英语不错，就是这么一看这个吧，心里倍受打击，我不会....

注：原句：the students don‘t knowwaht they shuold do next

同义句：the students don‘t knowwaht they - -next

两个空。

不要考虑什么语法，现在知道意思就可以了。
what they should do意思是他们应该做的事。不是疑问句
what should they do？意思是他们应该做什么？是问句

擦，那是从句啊亲， what they have to do

what they should do是名词性从句中出现的词序，what should they do是特殊疑问句中的词序。should可用ought to和be supposed to代替。

what to do =what i should do what to do =what she should do what to do =what he should do what to do =what they should do

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