非谓语动词有关知识点

　　什么是非谓语动词?非谓语动词是指在句子中不是谓语的动词，主要包括不定式、动名词和分词(现在分词和过去分词)，即动词的非谓语形式。非谓语动词除了不能独立作谓语外，可以承担句子的其他成分。下面总结几个非谓语动词有关的知识点

　　一、 非谓语动词，状语从句和独立结构

　　1) Having done their homework, the children began to play. (分词作状语)

　　2) After having done their homework, the children began to play. (连词+分词)

　　3) After they had done their homework, the children began to play. (状语从句)

　　4) With homework done, the children began to play. (独立结构)

　　二、非谓语动词作定语

　　1) If there is no choice, there is no decision ___ (make). (to be made)

　　2) Do you know the man ____ ( stand) in front of the house? (standing)

　　3) The question ____ (discuss) at the moment is very important. (being discussed)

　　4) The bridge ____ (build) in the 1950s is still in good condition. (built)

　　三、非谓语动词作状语

　　•动词不定式：1)目的状语;2)结果状语

　　e.g. I came here to meet you. (目的)

　　He hurried to the rail station only to miss the train. (结果)

　　•分词：1) 伴随状语;2)原因状语;3)条件状语 4)让步状语;5)时间状语

　　e.g. Walking along the street, he met his old friend. (时间)

　　Being very tired, my father didn’t go out with us. (原因)

　　Made by hand, the silk shirt is very expensive. (原因)

　　Seen from the space, the earth looks like a blue ball. (条件)