have an effect on 对…有影响 Reading books in bed have an effect on his eyes. 在床上看书使他的视力受到影响. These agreements have an effect on both the buyer and the seller. 这些协议对买卖双方都有作用. The new policy may have an effect on small business. 新的政策也许会对小企业产生影响.
make a difference to 例:where you live can make a difference to the way you feel. have a impact on 例: They say they expect the meeting to have a marked impact on the future of the country. 他们说期望这次会议对国家的未来产生显著的影响。