用for+代词宾格
Yesterday was my mother's birthday.So I bought a present for her.
昨天是我妈妈生日,所以我为她买了一份礼物.
动名词
Smoking is not good for health.吸烟对健康不好.（动名词做主语）
I like reading.我喜欢看书.（动名词作宾语）