ets新题一道

tony6

5.  The Immigration Service now has the discretionary power to keep families united even though all their members do not meet the five-year residency requirement.
(A) all their members do not meet the five-year residency requirement
(B) not all their members meet the five-year residency requirement
(C) all their members have not met the requirement for a five-year residency
(D) not all their members have resided for five years, a requirement
(E) all their members have not resided for five years, as required
答案B，请问NN，not all和all not有何区别？先行谢过。

lizaz

表示部分否定要用not all, all not会有歧义吧。

mjiehu

traditionally speaking "not all" have the same meaning with "all not", but "not all" is clearer in expressing the meaning

tony6

多谢楼上两位G友，就要烤了，急，昨天不知什么原因，找不到这个帖子了，所以又发了一遍，斑竹不要怪罪呀。

mjiehu

it is also true for "not everyone" and "everyone ... not"

tony6

收到，多谢。