精选优质文档-倾情为你奉上英语句子成分和英语句子结构讲解及练习1. 主语（subject）：句子说明的人或事物。The sun rises in the east （名词） He likes dancing. （代词）Twenty years is a short time in history. (数词) Seeing is believing. （动名词）To see is to believe.（不定式） What he needs is a book.（主语从句）It is very clear that the elephant is round and tall like a tree.（It形式主语，主语从句是真正主语）(一）指出下列句中主语的中心词 The teacher with two of his students is walking into the classroom. There is an old man coming here. The useful dictionary was g
