Question

9．你能猜猜我叔叔買這個機器人多久了？
Can you guess how long my uncle has had the robot？．

Answer 1

分析 Can you guess how long my uncle has had the robot？

解答 答案：Can you guess how long my uncle has had the robot？這里需要用賓語從句來表達，主句是你能猜猜，用含有情態(tài)動詞can的一般現(xiàn)在時，是一般疑問句將can放句首，主語you，后加動詞原形guess猜，故Can you guess．后面是賓語從句，時態(tài)不受限制，買buy這個動作發(fā)生在過去，持續(xù)了一段時間，用現(xiàn)在完成時have/has+過去分詞，多久用疑問詞how long，后加陳述句語序，主語my uncle，故has，buy是短暫性動詞，不能與how long連用，換成have，have的過去式had，這個機器人the robot，故答案是Can you guess how long my uncle has had the robot？

點評 賓語從句的三要素：引導(dǎo)詞，時態(tài)和語序，要牢記．