why you go to school with your brother? a.not b.doesn t c.don t d.do not 請幫忙解釋一下為什麼答案是c 謝謝?

Why don't you go to school with your brother?
這不是在問問題，而是在做「建議」，用語比較客氣而己，意思就是：
You should go to school with your brother.

這句的主詞為第二人稱，所以不會用到does，而是do。
do not會分開來時，是用在強調not的狀況，在做建議時，我們不會強調not，所以會縮成don't來講。

I don't like watching television.
I do not like watching television. （比上一句的「否定」語氣強，但通常我們不會如此說，只有在受人誤解時，才需要強調）

Don't you like watching television? （難道）你不喜歡看電視嗎？（問者主觀上認定被問者應該會喜歡看）
Do you like watching television? （開放式問題，問者不存偏見）

don't =do not, We have do's and don'ts.Hence in oral conversation we've don't and is used in question form as interrogative adverb as "why."
eg:-Why don't you go to school with your brother ?

Why you go to school with your brother? a.not b.doesn t c.don t d.do not 請幫忙解釋一下為什麼答案是c 謝謝?

a.not （X, 正規文法不通）

b.doesn't ( X, 後面的是you）

c.don't（O, 文意邏輯皆通）

d.do not（沒有錯但不順口）

*Why don't you go to school with your brother?
你為什麼不跟哥哥一起上學？

謹 供參考, 謝謝！


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