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關于疑問詞做主語怎樣才能準確的判斷疑問詞在句子中是什么成分？
⑴當主語，如：● When to hold the meeting has not yet been decided.● Where to live is a problem.● How to cope with the rising cost of living becomes a daily discussion topic. ⑵當賓語，如：● We must know what to say at a meeting.● He could not tell whom to trust.● Do you know how to play bridge？ ⑶當補足語，如：● The problem is where to find the financial aid.● The question is who to elect. ⑷當名詞同位語，如：● Tom had no idea which book to read first.● Do you have a rough impression how to do it？ ⑸當賓語補足語，如：● Jim is not sure whose to choose.● Mary and John are not certain whether to get married or not. 適用于“疑問詞+不定式動詞”的動詞包括：“know,see,decide,tell,ask,consider,discover,explain,forget,guess,hear,imagine,inquire,learn,remember,think,wonder,understand”等. 有點值得特別注意的是：當這結構當賓語時，它的作用等于名詞分句，例如：● I could not decide which dictonary to buy.=I could not decide which dictionary I should buy.● Jack did not know where to find such a good teacher.=Jack did not know where he could find such a good teacher. 有些動詞，如“ask,show,tell,advise,inform,teach”等，可以先有個賓語，然后才接著加上適當的“疑問詞+不定式動詞” 結構.例如：● The chief technician showed the apprentice how to repair the machine.● Have you told him where to get the application form？ 綜上所述，可見“疑問詞+不定式動詞”結構是個形象清新，既容易用又不容易出錯的特別結構，可以多多運用.看看上面的就明白了.。
特殊疑問詞做主語例句
特殊疑問句的主語可以用疑問代詞 who、which、what。
例如：
* Who is going to do the job？ 誰打算完成這件工作？
* They ran out of drink. Which actually didn't bother me. 他們把酒喝完了。實際上這對我來說無所謂。
* What precisely triggered off yesterday's riot is still unclear. 究竟是什么引發了昨天的騷亂還不清楚。
特殊疑問句=疑問詞+
以特殊疑問詞開頭，對句中某一成分提問的句子叫特殊疑問句。常用的疑問詞有：what who whose which when where how why等。
可先分為3種：
疑問代詞：what,who,which,whose,whom
疑問副詞：when,where,why,how
疑問形容詞：what(which,whose)+名詞
特殊疑問句有兩種語序
1.如疑問詞作主語或主語的定語，即對主語或主語的定語提問，其語序是陳述句的語序：疑問詞（+主語）+謂語動詞+其他成分。如：
who is singing in the room? whose bike is broken?
2.如疑問詞作其他成分，即對其他成分提問，其語序是：疑問詞+一般疑問句語序？ 如： what class are you in?
What does she look like?
Where are you from?
What time does he get up every morning?
How do you know?
關于英語特殊疑問句疑問詞放句末的情況
【樓主，你的問題里面“Who like her?Who is he？”不屬于特殊疑問句疑問詞放句末的情況】
【下面全都是自己一個字一個字打出來的，沒有半點復制網上的資料。】
【歡迎追問，望采納！】
特殊疑問句疑問詞放句末的情況我們可以理解成倒裝，它一般出現在【當說話人語氣非常強烈時】：
就拿樓主的“She likes who？”打比方。這句句子還原后應該是"Who does she like？"，倒裝后發生強烈的語氣變化。原本是“她喜歡誰？”，倒裝后的意思是“她能喜歡誰？”，等同于“She doesn't like anyone.”（她誰都不喜歡！）。所以我們得出一個結論：特殊疑問句將疑問詞放句末的倒裝句，等同于將這句句子還原后的否定句陳述句。
我們可以鞏固一下，樓主還提到“He is who？”，還原后是"who he is？"，它的否定陳述句是“He is nobody”（他誰也不是！）
【歡迎追問，望采納】
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