english He underwent the open-heart surgery.这句话中的the可以加么?是不是加了错了 求指教!还有underwent改成undergo会造成什么问题?

english He underwent the open-heart surgery.这句话中的the可以加么?是不是加了错了 求指教!还有underwent改成undergo会造成什么问题? He underwent a major heart surgery several years ago.求这个句子的句式分析 英语翻译Clark felt that his _participation__ in one of the most dramatic medical experiments of all time was worth the suffering he underwent. he----acar. what-----he--------english Walters underwent heart valve replacement surgery in 英语翻译He --------- English------me------ ----- ------- ----- He can speak English He can speak () () English. He speaks English well.. He islearning English now . He is ( )English teacher He often p____speaking English. He is good ( ) English. He studies English well He teaches English in He teaches we English he speaks english very( ) He is an English