prepare作此意讲时是及物动词 应该直接接物,而不需要其他介词,
有个用法是prepare sth for sb 意思是：为某人准备某物
下面是详
prepare vt.
1.准备;使...准备好[(+for)][O2]
They prepared themselves for the worst.
他们作了最坏的打算.
2.筹备,筹划[(+for)]
3.做(饭菜);制作;调制[O1]
When we arrived home,mother had already prepared dinner for us.
当我们到家时,母亲已为我们准备好了晚餐.
4.起草;编纂
不及物动词 vi.
1.准备,预备[(+for)][+to-v]
I was preparing for bed when I heard a knock at the door.
我正准备睡觉时听到有人敲门.
希望能够帮到你!