Danny could be very jealous and possessive about me.丹尼很爱吃醋，对我的占有欲很强。He used to ring his possessive mother several times a day.他母亲控制欲很强，过去他常常一天给她打好几次电话。People were very possessive about their coupons.人们很想独占礼券。...
在某事中起重要作用to play a major role in sth它们还在从起重机上掉落的地方，一部分露出水面。They lay where they had fallen from the crane, sticking out of the water.办好一所学校,校长起重要作用.The headmaster plays an important role in the good running of a school....