you made my day意思是「你讓我的一天很美好」「你讓我感到很開心。一般這種說法用來表達說話者的一種感謝之情，感謝他人的陪伴和幫助。
看看老外聊天時怎麼用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。弗蘭克以前都沒有為我做過。真是讓我好開心。
B 好甜蜜啊！
make my day例句精選：
You make my day. you're not like all the other cops.
你讓我很高興。你跟其他警察都不一樣。
You are so wonderful; you always make my day.
你實在太好了，你時時令我愉快。
Well, I know what would make my day. Let's go out to have brunch?
我知道怎樣會讓我整天都快活起來。我們何不去外頭餐廳吃早午餐呢？
That would make my day! He is such a stud-muffin.
如果是他就好了，他是個開心果。
表示對方讓你有美好的一天時，非常開心，除了make my day還可以這樣說：
That hit the spot.那使人愉悅。
After walking home from school，a cold soda would really hit the spot.
從學校走路回家後來一瓶冰涼的汽水真舒爽。
She knock me dead.她迷倒我了。
The way she poses for pictures really knocked me dead.
她為照片擺的姿勢確實把我迷倒了。