these have not had any effect

These have not had any effect. these have not had any effect but these has not had any effect These have not had any effect.effect 为什么不加s变复数呢? but these have not had any effect 及句型.为什么中间有一个had these have not had any effect这里为什么用these呢?能不能用this.these指的是J i have not had any change yet will the use of these products have any effect on the popula what might have become of us had these event not unfolded I have never lost any.Because I never had not received.中文意思是 英语翻译Internet based technologies have had a profound effect o 英语翻译Internet based technologies have had aprofound effect on