why some people often dream和why do some people often dream的区别

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why some people often dream和why do some people often dream的区别
why some people often dream和why do some people often dream的区别

why some people often dream和why do some people often dream的区别
加Do表强调.就相当于汉语中多一个感叹号~

前者只是某个句子的一部分 ,不是一个完整的句子 ,后者是一个疑问句

第一句是错的,

前者是陈述句,后者是特殊疑问句