单独问是how does the computer work?为什么加了do you know 就没有 does了?
答:how computer works这个英语句子中之所以没有用does,是因为这个是特殊疑问句变成的宾语从句。我们知道:宾语从句要用陈述语序。鉴于此,我们就应该how the computer works,而不是how does the computer work? 即:
Do you konw how the computer works?