英语语句成分Baekeland took out his famous patent describing this preparation,the essential features of which are still in use today.1、请问逗号后面的成分叫做什么?2、逗号后面的这句话改写成the essential features that are

英语语句成分Baekeland took out his famous patent describing this preparation,the essential features of which are still in use today.1、请问逗号后面的成分叫做什么?2、逗号后面的这句话改写成the essential features that are 求助分析这句话的句型结构On 13 July 1907,Baekeland took out his famous patent describing this preparation,the essential features of which are still in use today .the essential features 充当成分?非谓语 在本句中的作用? took 赞美英语的语句 英语的语句 没有英语经典语句 英语 的优美语句 求英语双关语句, 求英语经典语句, 为什么英语成分看不懂? 高二英语语法分析It took more than two decades,though,until 1951,for regular colour TV broadcasts to begin in the USA.这里边,For和to都是作什么成分啊? 英文语句中除了7个基本成分外还有什么成分,比如说it is made by him中的by him是什么成分英语中是不是7个基本成分涵盖了所有的句子成分,如果没,那还有哪些句子成分呢?求指导! 有关奥运的英语语句 英语语句排序,第二题 常用英语语句有哪些? 关于英语常用的语句 小妇人的经典语句 英语 初三英语上册重点语句