I didn't mean to scare you.我不是有意要嚇你

mean to:故意

Sorry, I didn't mean to frighten you.

對不起，我不是故意嚇唬你的。

I just stopped by to drop that off.我只是順路來送禮物

drop off:把…留下

I just came by to drop off your tank.

我只是把你的魚缸送過來。

Could you drop off the books at the library?

你能把這些書順便還給圖書館嗎?

I didn't wanna leave it at the front door,我不想把東西放在前門那里

in front of:在 ... 前面

There is a rose bush in front of the office.

辦公室前有一叢玫瑰。

I didn't do it to mess with your head.我不是故意要攪亂你生活的

mess with:干擾

Don't mess with her: she's got a violent temper.

別干預她的事，她脾氣很暴。