undertaketodo还是undertakedoing

Undertake 过去式: undertook 过去分词: undertaken 现在分词: undertaking 第三人称单数: undertakesundertake的英文翻译是什么意思，词典释义与在线翻译：详尽释义v. (动词)从事保证，担保做证人应承，承办承办丧事，承办丧葬事宜断言承担，承揽同意，答应接受进行试图着手做，开始担任负责（与for连用）承诺，允诺，约定，许诺后面跟名词或者不定式，如:We shall undertake the construction of this bridge.He undertook to finish the job by Friday.