listen扩词（比如listen to music多一点

listen扩词（比如listen to music多一点 Listen to listen to listen to Listen listen Listen Listen listen to music,为什么listen后要加个to? listen to,listen for ,listen in怎么区别 Listen!Who___________(listen) to the next room? listen carefully还是listen to carefully为什么 listen to 与listen 的区别,用法? 应该是listen to music 还是listen music 是Listen to carefully!还是Listen carefully? sound,hear,listen to,listen的区别 sound,listen to,hear,listen的区别? us前面用listen还是listen to?