begin有被动形式吗?The dinner _______(begin) with a turkey and some
begin有被动形式吗?
The dinner _______(begin) with a turkey and some pork.
答案给的是began.请问was begun能不能用呢?
我知道主动肯定可以.
但是不是有一个例句是:The research is so designed that once begun nothing can be done to change it.这里的BEGUN不是就是被动形式了吗?