The teacher came into the room, with a bottle ____water in his hand.
答案是filled with说是做定语.
我想知道的是,不是BE FILLED WITH吗.为什么没有be 动词.这里的fill是什么词喔/
第二个问题.
When was the PLA____(found).
It ____(found)in August ,1927.
答案是founded ;was founded.
found不就是过去分词了吗.
founded是什么东西啊.
还有就是
Bill saw Sally helping a blind man cross the street yesterday.
改为被动语态.
Yesterday Sally ____ ____ ____a blind man cross the street by Bill.
答案是was seen helping.
不是SEE的被动要是BE SEEN TO DO吗.
这里为什么还是SEEN HELPING啊