英语几个语法区别1：Lucy from China.Lucy is from China.Lucy comes from

lucy from china 不是一个句子,只是一个介词+名词的结构修饰lucy
Lucy is from China.
Lucy comes from China
是一个意思,但是第一个是用be动词+介词的形式,第二个是用Vi+介词的形式
Look at this group of people playing beach vollyball
playing beach vollyball是动名词（后置定语）修饰people
这句话的简单句就是look at peole
this group of （前置定语）也是形容people的