He saw a flying bird and raised his bow.和I saw forty horses running in the sprots field.为什么用现在分词?不是过去式,里面怎么会有现在分词还有how about going fishing？为什么用现在分词going？三个都解释下

i saw a bird ____ to the north A fly B flying C flys D flied Just now,I saw a bird flying into the room t______ the window. the sun setting in ----west ,and I saw a bird flying ------ south用the 和 /填空 We saw the bird flap its wings and _away. A. flyWe saw the bird flap its wings and _away.A. fly B. flied C. flew D. flying she is a bird which like flying. While flying over the channel ,the pilot saw what he thought to be a meteorite He saw a flying bird and raised his bow.和I saw forty horses running in the sprots field.为什么用现在分词?不是过去式,里面怎么会有现在分词还有how about going fishing？为什么用现在分词going？三个都解释下 I saw that he was flying a kite in the park just now能否换成I saw him that was flying a kite justI saw that he was flying a kite in the park juest now能否转换成I saw him that was flying a kite just now?问过同学说是不行, I saw a bird in a tree! Help,1.we ( ) in a sofa.A.seat B.sitting C.are seat D.are seating2Reading this book,( )A.a bird flew over his head B.a bird flew on his head C.he foud a bird flying over his head D.he found a bird flying on his head3.根据首字母写完整单词1.I He must have finished the job yesterday怎么改为被动语态?还有几个也需要改1.He studies English with hismother at home,2.He saw the bird flying in the sky.3.He saw the bird fly in the sky.都要改为被动 a bird saw the egg first flying bird怎么玩 flying bird怎么玩 ain't i flying like a bird 求助翻译 I saw that he was flying a kite in the park just now.改为同义句I saw ___ ___ a kite in the park just now. 急.I saw that he was flying a kite in the park just now.改为同义句 I saw ___ ___ a kite in the parjust now Look!A bird ( ) in the sky.A.flies B.is flying C.fly D.flying