she will be an actress( )two years .为什么用in而不用after?he said he found learning chinese( )because he couldn't understand people为什么用frustrating而不用frustrated(1介词IN 加时间段表示将来； AFTER ...这里的frustrating 修饰的不就是he这个人吗？FRUSTRATED 用来修饰人的，frustrating充当Chinese 宾语补足语Someone finds Chinese ( frustrating )=某人发现汉语是令人沮丧的，令人懊恼的 Someone finds Chinese frustrating = Someone finds that Chinese is frustrating 希望这次能理解明白并及时采纳，谢谢！