heard of/about 与heard区别

hear ,hear of与 hear about 区别 heard of/about 与heard区别 hear abou 与 hear of 区别请问下二者都有听说的意思 具体 怎么分?I've never ______ it before.A.heard about B.heard of heard of 与heard abou去区别?是hear of hear about的区别。他们两个到底哪个是仔细听说? hear of与hear about的区别 hear of 与hear about 的区别? do you hear about 与have you heard abouta的区别.have any one of you hear about sth中have的词性是? hear about hear of 区别 hear about ,hear of ,hear fromhear from ,hear of ,hear about 这三个短语的意思,用法有什么不同?..另:I haven't ____him for a long time.A.heard from B.heard of C.heard about 应该选哪个?为什么? hear ,hear of,hear about,hear from区别 请问:hear about与 hear of,know about 与know of有没有区别啊?请问hear about 与hear of有什么区别啊?还有know about与know of 在使用时, hear of 和hear about的区别? hear of和hear about 的区别? hear of与 hear about的区别具体点，加例子 hear与heard用法区别什么地方用hear,什么地方用heard I never______it.A.hear from B.hear of C.hear that D.heard what heard of 与heard from的区别 more and more better与better and better有什么区别?还有hear about与hear of有什么区别?