how long have't you heard from him是 heard from 还是 heard of 还是 hear from & hear of?为什么不是 heard from前面是have 的完成时啊

How long have you been i haven't seen you for a long time,how have you been recentely? you don't know how long I have wating for you.. how long have you been learning english? How long have you been studying? How long have you been in China? how long have you been dancing today? how long have you studied in this How long have you been there? How long have you live in China How long have you ----(live)here? “How long have you been watching how long have you done与how long have you been的区别 英语语法问题how long how long agoi really can't remenber_______A how long ago you met him B how long you have met him为什么不是B how long 是多久的意思为什么还要加 ago how long 不是引导完成时吗 Hey,I_______to meet you here.How long have you been there?A.don't expectB.didn't expectC.haven't expectD.wouldn't expect Hey,I 【】to meet you here .How long have you been here?A.don't except B.dadn't except C.haven't excepted D.wouldn't except How long have you been skating?与How long did you skate?的区别 这个句子有错吗?You don't how long I have waited for youYou don't how long I have waited for you请问这个句子有病吗?如果有的话,怎么更改?刚学英语,请大家帮忙看下You don't how long I have waited for you,the road seems s