为什么只有from where 这种用法?还有其他介词+where的用法吗?

为什么只有from where 这种用法?还有其他介词+where的用法吗? 为什么这种用法对from beneath?为什么可以有这种用法.两个介词并列出现诶~ learn from exprience有这种用法吗 关于 returning .bulk collect into的用法 DELETE FROM emp2 WHERE department_id = 30RETURNING employee_id,last_name BULK COLLECT INTO enums,names;我知道bulk collect into是批量绑定的用法.但是这种用法没见过啊 为什么要在删 定语从句引导词from where 的用法 I from 与 I come from 的用法和区别 Where are you from 与Where are you come from 的用法和区别 Where does Jim come?He comes from New York.和Where does the boy with big ears come from?用法?Where does Jim come?He comes from New York.——— -----Where does the boy with big ears come from?---------为什么前面都有助动词,而第一个 Where are you from?为什么用“are”? 关于where的用法Now I am back to ( ) I had started from.括号里为什么可以用where,我记得where不能用作名词定语从句？应该是宾语从句吧 英语一句话里只有一个动词?比如说where are you from 不能写成where are you come from?I managed to repair my car yesterday.那为什么这句有两个动词改成I repaired my car yesterday. We stand on the top of the mountain,________we can have a birdview.为什么填的是from wherefrom where 和 since when 具体用法是怎样的,什么情况下这么用为什么不用from which? 谁讲一下定语从句中from which和from where和from when的用法,举些例子谢谢 英语中be from 和come from 的用法有何不同?比如 Where is your pen pal from? where am me from是对的还是where am I from是对的为什么 where are you from 为什么不能用 where from are you 在Mysql5.0 中In 用法的疑惑SELECT * FROM A where A.bigclass in(select arrchild from B) 这样子为什么查不到数据,但是写成SELECT * FROM A where A.bigclass in(1,2,35,5) 这样子就可以.注：select arrchild from B 的查询结果 请教一个where 开头的疑问句的用法请教大家一个问题请看下边的句子：1Where did you buy this book?2Where are you come from?为什么第一句用的where后边用的是did ,第二句 where后边用的是are,第二句可否写 where在这个定语从句的用法(特殊）,就是这个句子,China is the birthplace of kites,( ) kiteflying（放风筝）spread to Japan,Korea,Thailand and India.A.from there B.where C.from where D.there为什么不选B而选C啊?请问C中的w