怎样识别被动语态,例如The lake has risen by tow meters after the heavy rain.而The lake has been risen by tow meters after the heavy rain.

怎样识别被动语态,例如The lake has risen by tow meters after the heavy rain.而The lake has been risen by tow meters after the heavy rain.
怎样识别被动语态,例如The lake has risen by tow meters after the heavy rain.
而The lake has been risen by tow meters after the heavy rain.

怎样识别被动语态,例如The lake has risen by tow meters after the heavy rain.而The lake has been risen by tow meters after the heavy rain.
The lake has risen by tow meters after the heavy rain.
这里用了现在完成时的被动语态by引导的是“差额”,上升了2米
被动语态是有关动词的语法范畴,它用于被动结构的句子中,表示主语是动作的承受者
1）被动语态的构成形式：助动词be+及物动词的过去分词（助动词的be要随主语的人称和数作相应的变化,并且有不同的时态形式.
English is taught in this elementary school.
All the tickets were sold out.
The decision will be announced
2)如果句子的谓语是个动词词组或者动词短语,在变成被动语态的时候,整个动词短语或者动词词组要被当做一个单个的及物动词来处理
the film has been much talked
the plan was given up
what he said should not be laughed at
3)一个句子如果有主动语态变为被动语态,原来的句子中的主语也就是动作的执行者,在被动语态的机子重要用介词“by”引出
jack is putting up a picture on the wall / a picture is being put up on the wall by jack
4)一般来说,在被动语态句中由“介词by+动作的执行者”的介词短语通常可以省略,尤其是在动作执行者难以或者不需要明确指出的时候.因为在被动语态句中主要强调的是动作的承受者,而动作的执行者已经被降到了次要的地位.但是如果动作的执行者在主动语态的句子中仍然是受强调的成分,那么变为被动语态的时候,这个动作的执行者仍然要保留.
Shakespeare wrote Hamlet / Hamlet was wrote by Shakespeare
被动语态中的情态动词：
this word can also be used as a verb
this must be done at once
the question is going to be discussed soo
被动语态的否定式与疑问式：
the poem wasn't written in 1931
this sentence can't be analyzed this way
when was the place built?
has anything been done about it?

被动语态一定会是主语+be动词+过去分词,如,He is asked to finish the task,在省略句中主语和be可省如,When( he was )asked about his girlfriend, he cried suddenly

The lake has risen by tow meters after the heavy rain。
by引导的是“差额”，上升了2米
rise是不及物动词，所以用主动语态

上句对,下句错.
大雨后,湖面上升了2公尺.

被动语态的特征就是be动词+done（即动词的过去分词），后面可加by，表示被什么怎么了。
这两句，第一句是对的，第二句是错的
rise是不及物动词，不及物动词是没有被动语态的，而第二句有been+risen（即被动语态结构），所以是错的。