概述:非谓语动词(不定式、动名词、分词)不是真正意义上的谓语动词,在句中都不能单独作谓语。但都具有动词的某些特点,可以有自己的宾语或状语,构成非谓语动词短语。都不受主语人称和数的限制(即无人称和数的变化),但有时态和语态的变化。如:He let me did it.(×)----He let me do it.(√) Lily helps me does it.(×)----Lily helps me do it.(√) She wanted to be punished by her father.