“因为超速行驶，他被警察抓住了。”“必须马上将病人（patient）送到医院去。”翻译成英文

He was caught by a policeman for driving beyond the limitation.
We must send the patient to hospital.

He was arrested by the policeman because of speeding.
The patient must be sent to the hospital immediately.

Police catch him because he drive over speed.

Must send the patient to hospital immediately.

He was arrested by the policemen because of overspeed.
The patient should be sent to the hospital at once.