比如看这个句子:It will help reduce the air pollution as well as do(ing)good to the environment as well as 后面原本要加动词ing形式的,可是当前面有一个动词是动词原形时它是不是相当于and的天平作用后面也要加动词原形? 这个句子用do还是doing?... 比 看 句 :It will help reduce the air pollution as well as do(ing)good to the environment as well as 面原本要加 词ing形式 前面 词 词原形 相 于and 平作用 面 要加 词原形 句 用do doing 谢谢 展开