Auxiliary verb is a verb that gives further semantic or syntactic information about a main or full verb

Mandarin Chinese

In Mandarin Chinese, another isolating language, auxiliary verbs are distinguished from adverbs^:pp.181-2 in that (1) yes-no questions can be answered with subject + auxiliary (e.g., Nǐ néng lái ma? Wǒ néng "Can you come? I can" is correct) but not with subject + adverb (e.g., Nǐ yídìng lái ma? Wǒ yídìng "Will you definitely come? I definitely" is incorrect), and (2) an auxiliary but not an adverb can be used in the yes-or-no construction verb + "not" + verb (as in Nǐ néng bu néng lái? "you can not can come?").

In Mandarin the auxiliary verbs have six properties that distinguish them from main verbs:^:

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  They must co-occur with a verb (or an understood verb).
  
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  They cannot be accompanied by aspect markers.
  
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  They cannot be modified by intensifiers such as "very".
  
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  They cannot be nominalized (used in phrases meaning, for example, "one who can")
  
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  They cannot occur before the subject.
  
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  They cannot take a direct object.
  

The auxiliary verbs in Mandarin^[:pp.182-3 include three meaning "should", four meaning "be able to", two meaning "have permission to", one meaning "dare", one meaning "be willing to", four meaning "have to", and one meaning either "will" or "know how".

REFERENCES:

1. 
   https://library.ziyonet.uz
   
2. 
   Raymond Murphy “English Grammar in Use” 2020. 102 p.
   
3. 
   https://Arxiv.uz
   
4. 
   https://foydali-fayllar.uz