cannot过去式

cannot过去式 cannot fly 的过去式? cannot 后面加过去式还是原形 cannot过去式 3分钟就请给我答案 cannot i cannot remember if i posted the letter 为什么后面用过去式而前面不用 “Cannot "is usually contracted to "can't"为什么"contract用的是过去式呢 过去式 cannot create 英语翻译Cannot touch,Cannot hold,Cannot be together Cannot love, cannot walk cannot find symbol错误