请问,这句话错在哪里?
Not until the 19th and 20th centuries did modern nationalism in Europe produced its ripest fruit and its lethal poisons.
否定开头的句子,句子倒装了,前面已经有did了,produced 就是错了,改为原形produce。
直到19世纪和20世纪,欧洲的现代民族主义才产生了最成熟的果实和致命的弊病。
【答】did是助动词,与动词原形连用。所以应该把 produced 改为 produce 。
produced改produce