名词性从句复习高二英语课件

从句一律保持陈述语序，主语从句同位语从句表语从句宾语从句How should we use modern technology? The problem is …The problem is how we should use modern technologyWhen will man be able to live on Mars? …is unknown to us allWhen man will be able to live on Mars is unknown to us allWhere will all these advanced technology lea，