1.成分上的区别:2. 名词从句和定语从句分别在句中充当什么3. 样的成分?1.Howtheprisonerescapedremainsamystery.2.Iwonderwhether/ifheisfitforthejob.3.Theproblemiswhowillbeequaltothetask.4.Hehadnoideawhetherwecouldovercomethepresentdifficultiesornot.主语宾语表语同位语5.IshallneverforgettheyearswhenIlivedinthecountrysidewiththefarmers,whichhasagreateffectonmylife.6.IntheofficeIneverseemtohavetimeuntilafter5:30pm.,bywhichtimemanypeoplehavegonehome.7.IhadneverseensuchagoodfilmasIwatchedlastnight.易错易混点:1. _we all know, smoking is harmful to ou