英语菜鸟求问his hobby is running和he is running 为什么一个是主谓结构一个是主系表结构?

英语菜鸟求问his hobby is running和he is running 为什么一个是主谓结构一个是主系表结构? 英语的主系表结构想问一个白痴的问题,i’m running,是个主系表结构吧!那翻译成中文我跑步好像就又说是主谓结构吗? 问一下英语爱好者rarry has the flu.His nose is running.He coughs a lo He is on his school running team. he comes from China和He is from China分别是主谓宾结构还是主系表结构还是主谓结构? He is s____about running? he is running 英语高手速进：：he is cooking.是主系表结构,还是主谓宾结构? 英语表语和状语的区别想问另一个白痴的问题,i’m running,是个主系表结构吧!那翻译成中文我跑步好像就又说是主谓结 英语及句法简单句是由一个主谓结构组成的,试问He is beautiful.这句话的谓语是什么,难道是表语beautif He running fast是什么结构?主谓宾?主系表?还是其他什么? he is running 填什么