二、句子的成分: 1、主语:是一个句子所要说明的人和事物, 是一 句的主体。
1)、The sun rises in the east. 2)、He likes dancing. 3)、Twenty years is a short time in history. 4)、Seeing is believing. 5)、To see is to believe. 6)、What he needs is a book. 7)、It is very clear that the elephant is round and tall like a tree.
作主语的有:名词、代词、数词、不定式、 动名词和主语从句。