在什么情况下现在进行时可以省略be动词。或者是必须省略?
现在分词做后置定语,可以省略,
The boy sitting over there is my younger brother
现在分词做宾语补足语可以省了,
we saw a thief stealing wallet from an old lady
现在分词做主语补足语可以省
例如,The boy is seen playing near the river
现在分词做后置定语,可以省略,The boy sitting over there is my younger brother 现在分词做宾语补足语可以省了,we saw a thief stealing wallet from an old lady现在分词做主语补足语可以省例如,The boy is seen playing near the river
在句中已经有谓语动词,这时会用到现在分词,表示主动进行动作。