Daisy and Herbie are chatting. D:Daisy H:Herbie D:How come you were late for school again this morning, Herbie? Didn't you just buy a Lazybones Alarm Clock? H:Yes, I did. D:Did you forget to set it? H:No, I didn't. D:Didn't it wake you up? H:It sure did. D:So what happened? H:I had a hard time switching the alarm off, so I gave up. D:What do you mean you gave up? H:I threw it out the window and went back to sleep.
●How come + 主詞 + 動詞? 怎麼會……? How come you left your child at home alone? Don't you know how dangerous that is? ●switch...off/on 關上/打開……(電器) I trained my dog to switch the lights on and off with its nose.