现在进行时被动语态的结构
现在进行时的被动语态是am being/is being/are being +动词的过去分词。
和现在进行时的主动语态一样，现在进行时的被动语态表示正在进行的动作，例如：
Ten new hospitals are being built at the moment. 10家医院正在兴建之中。
The final is being played as we speak.我们说话时正在进行决赛。
现在进行时句型分析
1、一般疑问句是将be动词移到主语前面，句末加问号，读升调，be+主语＋doing sth。
Are they putting up the scaffolding? Yes, they are. / No, they aren't.
Is he showing a foreign guest round the city? Yes, he is. / No, he isn't.
2、否定句式是在be动词后加not，主语＋be+not+doing sth。
I am not working.
The students aren't playing football.
现在进行时的结构是：Be+动词-ing。被动语态是：Be+动词的过去分词。
现在进行时是英语的一种时态，表示现在进行的动作或存在的状态。现在进行时表示动作发生的时间是“现在”。
动作目前的状态是“正在进行中”。在英语时态中，“时“指动作发生的时间，”态“指动作的样子和状态。
使用场合：
1、当句中出现的表示时间的词是now，at the moment，；（此刻、现在）等时，表示句子要说明的是现在正在发生的事，动词应用现在进行时。
Linda's brother is watching TV in his bedroom now.
现在，琳达的哥哥正在他的卧室里看电视。
We're far from home. What are our parents doing at the moment.
现在，我们远离家了，我们的父母此刻在干什么呢。
现在进行时的结构是：Be+动词-ing。
被动语态是：Be+动词的过去分词。
因为Be也是一个动词的，所以现在进行时的被动语态结构是：
be+being+动词的过去分词
举例： The problem is being discussed now。
He is doing his homework。变成被动语态就是
His homework is being done by him.
be+v. ing
②现在进行时的被动语态:
be+being done
less…than=not as much…as
fewer…than=not as many…as
