an interest,a benefit ,an advantage之间如何区分?

take a great interest in 和 take an interest in take an interest in变为take a great interest in时an为什么要变为a an interest,a benefit ,an advantage之间如何区分? what ------- interest book!A ; a B ；an求高手 单项选择：He shows ____ in music.A.interest B.interested C.interesting D.an interest take an interest in show an interest an interesting places=a places of interest有a或an为什么place还加s?还是是“an interesting place=aplace of interest”? interest的单复用法show an interest in something 中若去掉a 是变成“show interest in something ”还是“show interests in something take an interest in=have an interest in Tom is an ______man(interest) an interest in history是什么意思 he lost imself 【A:interest B:excited C:interesting]in an story in a magazine I'll live in an ___ place.A,interest B,interesting C,interested D,interesrs do you have____in music?A,an interest B,interesting C.intersted D.interests He takes_ in singing English songs.A.interests B.an interest C.interesting D.interested ask a lot of questions.show an interest in other people's answers. take an interest in the world _____ you.A .under B.around C.above D.between