She tried to persuade him not to smoke,but he_______listen.
答案是wouldn't告诉我为什么是这个。
顺便告诉我couldn't shouldn't wouldn't的区别。谢谢了^-^
參考答案:wouldn't do something的一层意思就是过去常常不做某事，前面说她尽力说服他不要吸烟，因为TRY用了过去时，所以用wouldn't
couldn't shouldn't 都是不许的意思，但是前者的语气更重，强调不准，后者语气更轻，强调不应该
wouldn't的意思已经说了