be动词后面加ing，什么时候不用加ing

　　be动词后面加ing时表示进行时，当表示被动语态的时候不用加ing，要用过去分词形式。
　　例如：事/物人 +Be + 过去分词”以组成被动语态(The Passive Voice)，如以下句子：

Her money in the drawer was stolen.
A number of good jobs are taken up by foreigners.
David studied in Taiwan but hasbeen trained as a language lecturer in America.
Can all the wonderful birds be found in our Bird Park.
The disobedient boywas told to stand out- side the classroom.
Steps are being taken to reduce traffic con- gestion during peak hours.
Dishonest students will be immediately dealt with.

being 是用在进行时
【精】 【锐】

be + V-ing 进行时态
be + V-ed 被动语态