have somebody at one's back 讓別人支持某人
【講解】
back作名詞時有“後背”的意思,at one's back在習語中轉義為“支持' have somebody at one’s back意即“讓某人支持某人’。
【對話】
A:Tom is very nervous. He is going to run for the chairman.
A:湯姆很緊張,他要競選主席。
B:Let's have us at his back.
B:我們去支持他吧。
A:All right. We'll talk to him tonight.
A:好啊,今晚我們找他談談。