“to+动词原形”叫做动词不定式,如towork,toplay,tobe等。其否定式为:not+to+动词原形,如nottowork,nottoplay,nottobe,动词不定式又简称为不定式。它是非谓语动词,没有人称和数的变化,在句子中不能作谓语,但它可以作其它的句子成份,如可以做主语,宾语,宾补,定语,状语。不定式 The “to + verb form” is called verb infinitive, such as towork, toplay, tobe, etc. The negative form is: not + to + verb primitives, such as nottowork, nottoplay, nottobe, verb infinitives are also referred to as infinitives. It is a non-predicate verb. There is no change in the number of persons and numbers. It cannot be used as a predicate in a sentence, but it can be used as other sentence components, such as subject, object, object complement, attributive, adverbial. Infinitive