gain用作不及物動詞時后接介詞in表示“在某方面有所增長”; 后接介詞on或upon表示“接近,勝過或趕上”。

　　His books have gained in popularity in recent years.

　　近年來他的書越來越受歡迎。

　　The country gained its independence ten years ago.

　　這個國家十年前贏得了獨立。

　　My watch gains two minutes every 24 hours.

　　我的表每24小時快兩分鐘。

　　Her novels have gained in popularity over recent years.

　　近年來她的小說漸受歡迎。

　　Students gain college credits which count towards their degree.

　　學生獲得的學分將計入其學位積分。