句子成分及其基本句型
一、句子成分
主 谓 宾 表 定 状 补
1.主语——“是什么”或“是谁”。在句首。一般由名词、代词、不定式或相当于名词的词或短语来充当:
(1)Lucy is a beautiful nurse. (名词作主语)
(2)He reads newspapers every day. (代词作主语)
(3)Smoking is harmful to the health. (动名词作主语)
(4)To swim in Kunming Lake is a great pleasure.(不定式作主语)
(5)What we should do is not yet decided. (主语从句作主语)
2.谓语——“做什么”“是什么”或“怎么样”。 在主语后面。谓语和主语在人称和数两方面必须一致:
(1)His parents are teachers. (系动词和表语一起作谓语)
(2)We study hard. (行为动词作谓语)
(3)We don’t finish reading the book. (助动