I have some English books on English studying.这里为什么用介词on而不是about

I have some trouble in learning english 同义句 I have some English dictionaries 改为一般疑问句 I have some English book.改特殊疑问句 I have some English books on English studying.这里为什么用介词on I have some English books on English studying.这里为什么用介词on而不是about I have some difficulty in pronouncing some of the words in English.为什么不用difficulties? I have some advice on learning English和 I have soI have some advice on learning English和I have some advice to learn English哪句话是对的,还是都正确的 I have——friends here .They don't have English books （some any） Can I have some May I have some I have some milk___bread__breakfast can I have some I have some friends.have I have some english and american (stamp atamps)用单数还是用复数 —I don’t have——English novels.Can you lend——to me?—SureA.any；some B.some；anyC.some；some D.any；any Do you have （填空）English books?-No,I don*t have any.用some或any选择 选什么? They have some English stamps改单数 Most students have some problems ________ (read) some English story.