being在什么情况下用

being在什么情况下用

being在现在时中通常用于系动词之后,而句子通常是被动语态.
被动语态的句子通常是物做主语+系动词+动词过去式.当被动语态的句子表示现在时的时候,就必须在系动词后面加多一个being
例如楼上那个人说的句子,我做一些修改.The building is being built for living.这个句子如果是现在时态.如果只是一般的被动语态,那么句子将变成The building was built for living.
明白现在时的用法了吗?
所以,如果把楼上的另外一个题的现在时改一下,变成过去式,应该是The traffic accident was invested by the police；
Being happy is important for us.（保持）开心对我们来说很重要.
be adj 做主语的时候.
I like/enjoy/love being a teacher.我喜欢当老师.
like/enjoy/love doing句型当中.

英语的被动语态的进行时句型：主语＋be + being 过去分词
被动语态现在进行时的例句:
A new railway is being built.一条新铁路正在修建．
被动语态过去进行时的例句:
The roads were being widened.路那时正在加宽．