He never does his work _Mary. 为什么不是so carefully as

问题描述:

He never does his work _Mary. 为什么不是so carefully as
答案是as carefully as ,但因我认为前面有否定词never ,所以应用so 来代替 至于not as …as在地道的表达中都是not so …as

一样的,即as / so carefully as 在这里都可以可是在不同的两本教参上都要求很紧,是asnot as ... as = not so ... as 用于否定句,如果是肯定句只能用as ……aS, 参考书上有说到不能用not so .. as ?估计是他们扣得有点太紧,还是只记答案就好了