All the students can't speak Japanese --means

Question

A. No students can speak Japanese.
B. Some students can speak Japanese.
C. All the students can speak Japanese
D none of the students can speak Japanese.
答案是B，为什么

Answer 1

ALL the students是个整体概念，整体不能说日语不代表每个个体都不能说。所以选项B最合适
如果要说没有一个人能说日语，就得用D选项进行表达。

这个读起来很拗口，但是语法上就是i这么定的。