いぶかしいの意味でscratch one's headといいます。0:13 many people are sort of scratching their heads when they learn .... を知って、多くの人は首をかしげている。
http://www.youtube.com/watch?v=-fXyICSgNWY 6:56 before all the things that had investigators scratching their heads,the biggest problem was still the simplest.捜査官たちを悩ませ(首を傾げさせた)た多くの問題よりも、最大の疑問はとても簡単な物だった。
http://www.youtube.com/watch?v=ApZq2EcLYsI&feature=feedu 0:26 head scratcher=mystery
http://www.youtube.com/watch?v=tDrRAp0v5sc 0:06 make you think twice ここでは首を傾げさせるの意味
http://www.youtube.com/watch?v=SJi7KuNZduM 0:48 考えるの意味
http://www.youtube.com/watch?v=MtRgfO-hwaA 4:36
http://www.youtube.com/watch?v=WqZBiutqp58 1:33 what makes you scratch your head and question why,,,おかしいと思って自問することは、、、
http://www.youtube.com/watch?v=v9DvsDXY6oM 0:16 so you have to scratch you head when the President spent the last week talking about saving Big Bird. この期に及んでビッグバード救済を訴える大統領の行動をおかくし思わなくちゃいかん。
練習問題解答
a-944 scratching their heads
a-2941 scratching their heads
a-4650 scratching their heads
b-5116 a head-scratcher