I often listened to tapes,( ) to imitate them.括号内的动词为什么要用ing 形式?什么时候用-ed形式？它不是过去式吗？

I often listened to him play the violin.为什么listen加ed ( )I often listened to him ______ the piano.A.to play B.play C.playing D.played listen hear用法I ————but————nothing.A listened,listenedB listened to,listened toC listened ,heardD heard to,listened ( )1.I often listened to him _____ the violin in the beautiful garden.A.play B.to play C.plays D.is playing (选哪个 , I often listened to tapes,( ) to imitate them.括号内的动词为什么要用ing 形式?什么时候用-ed形式？它不是过去式吗？ I ______but _____nothing A都填listened B.都填 listened to C.lishened,heard D.heard to,listened i listened to one called为什么listened 后面加to啊 总感觉这句话(英语)有错~I often listened to him play the violin.总觉得play应该用动名词,却不知道为什么. 现在完成时：I have listened to ,是否要加to When I got home ,my son had listened to the music.(listened) I should have listened to you yesterday.为什么加HAVE I listened to him _______（talk）about the film. I listened to music a moment ago.改一般疑问句. I listened to their report yesterday改为一般疑问句 If i just listened to it right outside the I listened to a CD called Heart String recently.=I listened to a CD of Heart Strings recently. I ______ but I didn't________ anything.A.listened ,listen to B.heard ,listen toC.listened,hear D.listened to ,hear 2.People are often made to laugh by the ]man A:interesting B:interested 3.--Did you hear]knock at the door?--No,I[?]to my MP3.A.anybody ,listened B,anybody ,was listening C,somebody,listened D,somebody,was listening