Could is a modal verb. It is used with the base form of a verb. Could is sometimes considered to be the past form of can, but in this dictionary the two words are dealt with separately. could 为情态动词，与动词原形连用。could 有时被视为 can 的过去式，但本词典对这两个词条分别列词解释。
could 基本解释
modal动词可以；用于can的过去式；（礼貌地请求别人做事）能aux动词想；“can”的过去式；用于假设语气的条件句；用于虚拟语气的结论句网络能够；可能；会
