alarm sb 使驚恐，使擔(dān)心
I didn't want to alarm my mom by telling her that I was ill.
我不想讓媽媽擔(dān)心，就沒有告訴她我生病的事。

concern sb 使某人擔(dān)心；讓某人擔(dān)憂
It concerns me that you no longer seem to care about me.
你好像都不在乎我了，這讓我感到很擔(dān)心。
It concerns me that he hasn't been in contact.
還沒有聯(lián)系到他，我很擔(dān)心。
His attitude concerns me.
他的態(tài)度讓我很擔(dān)心。

misgiving about sth/doing sth 疑慮；顧慮
I had grave misgivings about making the trip.
對于這次旅行，我有過極大的顧慮。
My only misgiving is that we might not have enough time to do the job well.
我唯一擔(dān)心的是我們沒有足夠的時間把這個工作做好。

pussyfoot 慎重，顧慮重重
Stop pussyfooting around/about and tell me what you really think.
不要顧慮重重的了，告訴我你怎么想的。

hung up on/about sth/sb 十分擔(dān)憂；想得過多
Don't get hung up on details.
別太擔(dān)心細節(jié)。
You shouldn't get hung up, man.
別再為這事鬧心了。
Why are so many women so hung up about food?
為什么女性都這么擔(dān)心飲食。

cry over spilled milk 作于事無補的擔(dān)憂，為無可挽回的事憂傷
Well, there's no use crying over spilled milk.
事已至此，擔(dān)心也沒有用了。