By what means did they get the information?这里的what可以换成which吗?为什么呢

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By what means did they get the information?这里的what可以换成which吗?为什么呢
By what means did they get the information?这里的what可以换成which吗?为什么呢

By what means did they get the information?这里的what可以换成which吗?为什么呢
不能.因为在这里是“什么途径”的意思.
which和what的区别是：前者用于选择范围较小或较明确的场合,后者用于选择范围较大或不明确的场合.
which 的选择范围相对比较小或明确,所以其后一般不接else,但却常与表特定范围的of短语连用：
　　Which of the three girls is the oldest?这三个女孩中哪个年纪最大?
　　Which of the boys is the strongest?这些男孩当中,哪一个力气最大?
　　你还要点别的什么吗?
　　正：What else would you like?
　　误：Which else would you like?
　　四、口语中的用法区别
　　比较以下三组对话,注意体会它们的区别：
　　A：Who is he?他是谁?
　　B：He is Mary’s husband.他是玛丽的丈夫.
　　注：Who is he?的意思是要了解他的一些情况.
　　A：What is he?他是干什么的?
　　B：He is an English teacher.他是英语教师.
　　注：What is he?的意思是询问他的职业.
　　A：Which is he?哪位是他?
　　B：The one by the window.窗户边的那位.
　　注：Which is he?的意思是要在几个人中辨别要找的人.

By what means did they get the information?这里的what可以换成which吗?为什么呢 by what means by all means by any means 意思各是什么？ By means by means we will see what beijing means by’reform怎么译? what did you mean by saying “what means it's by no means clear what the president can do toend the by no means 是干吗的 you'd better ask your teachers and parents for advice,___ you will surely make a much wiser decision.a.by this means b.by that means c.by which means d.by what means 原因 by every means 还有by any means What festival is on March 8th?What did you do last Spring Festival? 60 days payment day 20th by means of D/P,该怎么翻译?哪位精通国际贸易,请指教! What did the words of the man ___? A. idea B. suggest C. means D. meaning 词义辨析By means of.by no means.by this means.by all means by means of 英语翻译 Rome,by all means by all means by no means