Question

“All my classmates don’t speak Japanese” means “________”.

1. A.
   All my classmates won’t speak Japanese
2. B.
   None of my classmates speaks Japanese
3. C.
   Some of my classmates speak Japanese, some don’t
4. D.
   Both my classmates and I never speak Japanese

Answer 1

C
根据左栏的讲析，原句中所表达的意思为部分否定，与C项意思一致。B、D两项均表全部否定，A项虽表部分否定，但用won’t不符合原句意思，won’t有“不愿意”的含义。
再如：Not all ants go out for food．
相当于All ants don’t go out for food.并非所有的蚂蚁都外出觅食。