语态

He's been troubled with a bad back since he was a child . John was Invalided out of the army .

用汉语表达这些句子中的同样的概念，就可以不一定用被动语态。

The president was mistrusted by the leaders of the two most powerful political parties in the country.

leaders后接一个较长的作定语的介词短语，如果改用主动语态来表达，就会头重脚轻。

The president was mistrusted by the leaders of the two most powerful politicalparties in the country.

&leaders&后接一个较长的作定语的介词短语，如果改用主动语态来表达，就会头重脚轻。

In this dissertation,an investigation is made involving 95 verbs and 450 sentences with reduplicated verb.

本文调查了95个动词共450个动词重叠句，就及物性的十个参数：参与者、动作性、体貌、瞬时性、意愿性、肯定性、语态、施动力、宾语的影响性和宾语的个体性对这些句子进行及物性计算，得出结论：动词重叠句较基式动词句及物性低，进而对450个动词重叠句出现的语篇环境进行考察，证明了其作为背景句的假设。

It is being repaired by a friend of my father's.

用的是现在进行时的被动语态。

1Be类助动词:be, am, is, are, was, were, been, being.

这类助动词与现在分词构成进行时态，与过去分词构成被动语态。

The researchers recently observed a wild bottlenose dolphin following a precise series of maneuvers to kill, gut, debone and de-ink a cuttlefish for a perfect mollusk meal.

文章结合英语语言自身特点，探讨英语新闻标题在时态、语态、省略、标点、缩写词等方面的一些独有特征。

Paper deals with the contrast from four aspects: 1、 polarity ; 2、 transitivity; 3、 voice; 4、 ergative.

本文应用系统功能语法中三大纯理功能之一的概念功能理论，对英汉广播新闻从四个层面进行对比分析：一、归一度；二、及物性；三、语态；四、作格。

France will be represented by three fencers.

注意represent一词，有&代表&的意思，且多用于被动语态。

These vugs carry no gold and the tenor of the vein has not been affected by them.

句子的主语在逻辑上要清楚、连贯，避免在同一句子或段落内部改变语态形式以免冗长和迂回

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。