"Neng" is an auxiliary verb which means to have the ability to or possibility of doing something.

The auxiliary verb is a group of words belonging to verb, and it has its own particular grammatical feature.

助动词是动词内部的一个小类，它有自己特有的语法特征。

Here have is the auxiliary verb and completed is the main verb; have completed is the present perfect tense.

在这里have是辅助动词而completed是主要动词，have completed是现在完成时。

Since the grammarians began to study the auxiliary verb, the discussing of the auxiliary verb never ceased.

从语法学家开始研究助动词这一词类以来，有关助动词的讨论研究从未间断过，并且取得了一定的成果。

For example, did you know that the present continuous tense is formed with the help of the auxiliary verb to be?

例如，你是否知道现在进行时需要助动词To be的帮助？

On Perfect Auxiliary Verb in the Ningxiang Dialect

宁乡方言中的完成体助词

In sum, what mentioned above all belongs to the features of Japanese accessory word and auxiliary verb.

这些都可以说是日语助词、助动词所具有的非词性。

Thirdly, they use much more the auxiliary verb be as progressive marker and much less as passive marker.

第三，他们多用助动词BE作为进行体标志，而非被动语态标志。

In the past time, the research of auxiliary verb in remote Chinese is just confine to its' meaning.

过去对上古汉语助动词的研究一般也只限于逐个分析义项，列举例句。

The Chinese auxiliary verb is one of the very important Lexical categories deserve to be pay much attention to.

汉语助动词是值得关注和研究的一个词类。

The Auxiliary Verb Research Overview

助动词研究综述

On the Auxiliary Verb "Hao Yi Si" and Its Negative Form

助动词好意思及其否定形式初探

Application of English Model Auxiliary Verb and Model Verb on Project Bid and Tender Documents

谈英语情态助动词和情态动词在工程招投标文件中的作用

An Analysis of Chinese Auxiliary Verb Errors Made by Thai Students of Intermediate Level

中级水平泰国留学生汉语助动词习得偏误分析

The Research of Auxiliary Verb in Remote Chinese

上古汉语助动词研究

A new study of the origin of Chinese auxiliary verb "hui"

助动词“会”的起源新探

Simple Analysis on the Syntactic Features of English Auxiliary Verb DO

英语助动词DO的句法特征探索从助动词do看初级英语语法教学

The word "do" is an auxiliary verb.

“do”是助动词。

As a result, we can supplement a words grammatical meaning if it is followed by accessory word and auxiliary verb.

于是我们可以通过在词之后接续助词、助动词这一手段来补充词的语法意义。

Comparing" word", we can find out this special feature of accessory word and auxiliary verb.

对照“词”的性质我们可以找到助词、助动词的非词性。

This paper researches law of tool material hardness affecting wear in ultrasonic machining.

通过试验研究了以硬度为主的材料性能对超声加工工具磨损影响的规律.