第一题一些动词短语变成被动语态时要注意不能丢掉后面的介词,如
Some children were taken good care of in that village .这句中的of不能丢掉.
第二题 不及物动词无被动语态,如 come happen 如
An accident happened in the street last night.
第三题 一些不及物动词短语和一些及物动词短语无被动语态.如 break out come about take place 以上三个的意思是发生 occur to 某人突然想起 belong to 属于
Great changes have taken place in our hometown in the past years.这句中不能用被动.