Welcome back to school.句中的Welcome到底是动词还是形容词?back是副词吧,那它修饰Wel

Welcome back to school.句中的Welcome到底是动词还是形容词?back是副词吧,那它修饰Wel welcome back to school. Welcome back to school.中文 Welcome back to school是什么意思 welcome back to school 和welcome to school 哪个对 Welcome Welcome Welcome back To.welcome.school.back怎么连词成句 Welcome back to school.用中文怎么说 welcome back to schoo Welcome back to here 2012pep新版教材 第一单元是 Unit 1 Welcome back to school! 为什么welcome back to school前面有to,而welcome back home不能加to?schoo