the price increase has had no effect on sales

this medicine has had no effect on the patient为什么要加 had,has the medicine has had no effect on me 这句话是完成时态吗? What are the effect of price increase in rice to consumer an 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 On-line retailers are seeing big increase in sales-though no 翻译The income effect refers to the effect on price and quanti 英语翻译The rapid increase in the price of oil has affected the 求英语填空题答案1 Rise in consumer goods sales has the effect of （ ）