18．Jack put some tea leaves on the desk．（一般疑問句）
DidJack putany tea leaves on the desk？

分析 杰克將一些茶葉放在桌子上．
杰克將一些茶葉放在桌子上了嗎？

解答 答案：Did any．
原句put是put的過去式，實意動詞，故借助于助動詞did構成一般疑問句，some放在肯定句中，疑問句用any，故答案是Did，any．

點評 一、含有be動詞（am/is/are/was/were）動詞的一般疑問句，通常把be動詞調到句首． 
二、含有情態(tài)動詞（can/may/must/could）的一般疑問句，把情態(tài)動詞調到句首．
三、句子里沒有be動詞、助動詞、情態(tài)動詞等，就需要加助動詞do，does，、did（過去式）來構成疑問句，加上這些助動詞后，句子中謂語動詞必須用原形．  
其句型為：Do/Does/did+主語+動詞原形+其它？

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