主语从句就是做主语的句子,一般动词用ing形式.Studying English is so easy.
定语从句就是修饰名词或代词的句子.I like the shoes which are blue.
宾语从句是放在动词后的句子.You know what you have to do now .
表语从句是放在诸如am,is,are等后的句子,用to do形式.If you want to study English,the best way is to practice everyday .