the medicine has had no effect on me 这句话是完成时态吗?

the medicine has had no effect on me 这句话是完成时态吗? this medicine has had no effect on the patient为什么要加 had,has The medicine has side effect.为什么? 英语翻译The car has also had a significant effect on the culture Probably no man had more effect on the daily lives of most p 一道高中英语语法题Probably ,no man had more effect on the daily lives what effect has the booming economy had on interest rates fo 求助英语语法达人The effect globalisation has had on culture is immen 英语翻译是I had no money on me 还是I had no money about me he had got into the car 是过去完成时态吗 studies will be needed to see if the medicine has any effect It remians ___ wether the medicine has side effect.(负作用)