以下那些是从句?为什么是从句做简单的讲解.1.Hewaswritinghissignatureatthebottomofthepage2.GuesswhatIdidinthewholeofthefirstweek3.ThatafternoonIgotboredandactuallyIfellasleepforafewminutesatthemeeti

　　以下那些是从句?为什么是从句做简单的讲解.

　　1.Hewaswritinghissignatureatthebottomofthepage

　　2.GuesswhatIdidinthewholeofthefirstweek

　　3.ThatafternoonIgotboredandactuallyIfellasleepforafewminutesatthemeeting

　　4.WhenIwasyoungshealwaystreatmetoicecream

　　5.Wewonderwhathadhappenedtotheoldman

　　6.Itwastheorangeflavorthateverybodylikes

　　7.Ijustspentavacationthereandwouldrecommendittoanyone

　　8.Heleftmeamessagethathewouldmeetmeintheclassroomat7P.M

　　9.Hewasaguywhoenjoyhislifetothefull

　　10.Fortunately,theweatherwasreasonablymildthatwinter