1.引导名词性从句,作连接代词,在从句中作主语,宾语,表语。 主语从句:eg:What she did is not yet know. 宾语从 句:I wonder what he's writting to me about. 表语从句:eg:That was what she did this morning on reaching the att
主语从句 what is important is....... .宾语从句 we should do what we can to protect nature. 标语从句 this is what i want. 同位语从句 i have no idea what we should do next.