I think students won't need dictionaries because a robot wil

答：I don't think that-从句并不是I think that-否定句的“否定转移”.
所谓的“否定转移”是相对于汉语表达习惯和英语表达习惯的不同而提出的一种“现象”.
汉语常说：我认为你不对.而英语常说：1.I don't think you are right.
他们一般不象汉语这么直白,不说：2.I think you are not right.
对比这两句话的区别：
二句否定在从句中,表示：我的观点就是：你是不正确的.
一句否定在主句中,表示：有一种观点,你是对的（you are right),但是我不这么认为.
所以用I don't think you are right 就比I think you are not right.要委婉一些.
但不是任何情况下都要”否定前移的“,比如：我认为你不错.是I think you are not bad.好呢还是I don't think you are bad.好呢?当然,外国人I don't think 已经成为习惯,可能更多的人会说：I don't think you are bad.
针对本句：
I think students won't need dictionaries because a robot will tell them the meanings of words.
我认为学生（将来）不需要词典了,因为机器人会告诉他们单词的意思.
纯粹表达自己的一种观点,也不会上学生感到不舒服,也不是表达与别人不同的观点,所以就不会说：I don't think students will need.because .,
如果这么表达的话,则是有人说了一句：I think students will need dictionaries (in the future).
受英语的影响,现在的年青人说话也开始委婉了：我不认为...,
当别人表扬赞美你时,也不说”哪里,哪里,差远了“,而说：“了