英语翻译1-they experiment was a success.2-they experiment had su
英语翻译 1-they experiment was a success. 2-they experiment had succeeded. 3-they experiment succeeded. 不好意思代词打错了。 1-their experiment was a success.... 2-their experiment had succeeded.... 3-their experiment succeeded.... 补充下,我认为: 第一、三句都用了一般过去时,到底哪个是对的? 第二句是完成时。表述是否正确?