I tell you I have never played tennis before. I tell you I have never played tennis before 正确答案是 I told you I had never played tennis before 虽然我也认为原句是对的。但这之间有什么区别吗?
I told you I had never played tennis before. -----我告诉过你的,我之前从没打过网球。 一般情况下,I told you...... 用得多。但单独这句:I tell you I have never played tennis before. 没有错啊!所以谈论一定要放在上下文中的。 希望对你有启发