英语语法时态分析,高手请进
And as my son and husband could’ve toldthem, you need to think carefully before
digging them up.前一句中为什么用could have told而不用have told?这里不是虚拟语气吧.中文：正如我的儿子和丈夫可能会警戒她们的那样,在你把真相挖掘出来之前一定要想清楚.