如何学英语的定语从句？？

划分好句子成分，及that的特殊用法如强调句，it's……that,it's not until……that,先行词为every,all,nothing等修饰时只用that,如果先行词有介词则一定不用that,而用which,in which=where,on which=when,for which why
which引导非限制性定语从句就是前面有句号的，当先行词为一个句子是只用which去引导，where主要是引导地点壮语从句

搞清楚主语 谓语 宾语 和及物不及物动词，