求救be good at、be famous for…等这样的短语是介词短语还是动词短语.He is good at s
求救 be good at、be famous for…等这样的短语是介词短语还是动词短语.He is good at speaking english.这是主系表的句子还是主谓宾的句子?如果是主系表结构,表语是good,at speaking english这个介词短语作什么句子成分?求好心人分析句子成分,本人感激不尽!
be good at、be famous for都是个系表结构的短语。 he is good at speaking english。这是个主系表结构的句子。表语不一定只是一个单词,good at speaking english在这里整体做标语。 或者你也可以这样理good是表语,at speaking english在“表语补足语”