you made my day意思是“你让我的一天很美好”“你让我感到很开心。一般这种说法用来表达说话者的一种感谢之情，感谢他人的陪伴和帮助。
看看老外聊天时怎么用make my day：
A This morning I had my breakfast in bed.Frank had never done it before.It really made my day.
B That's so sweet！
A 早上我在床上吃早餐。弗兰克以前都没有为我做过。真是让我好开心。
B 好甜蜜啊！
make my day例句精选：
You make my day. you're not like all the other cops.
你让我很高兴。你跟其他警察都不一样。
You are so wonderful; you always make my day.
你实在太好了，你时时令我愉快。
Well, I know what would make my day. Let's go out to have brunch?
我知道怎样会让我整天都快活起来。我们何不去外头餐厅吃早午餐呢？
That would make my day! He is such a stud-muffin.
如果是他就好了，他是个开心果。
表示对方让你有美好的一天时，非常开心，除了make my day还可以这样说：
That hit the spot.那使人愉悦。
After walking home from school，a cold soda would really hit the spot.
从学校走路回家后来一瓶冰凉的汽水真舒爽。
She knock me dead.她迷倒我了。
The way she poses for pictures really knocked me dead.
她为照片摆的姿势确实把我迷倒了。