I saw him come out of the cinema."come" 为什么是原型?

I saw him come out of the cinema.come 为什么是原型? I saw him _____(进入)the Building A yesterday afternoon but he didn’t come out. I saw him go out just now. I saw him go out.为什么不能写I saw him went out I saw him _____(进入)the Building A yesterday afternoon but he didn’t come out.P34 I saw him ______(come)in a moment I___(leave) when I saw him come to me. I saw him to go out to play改错 Morgan______ still be in the office now,because I saw him go into it,but not come out.A.mayB.canC.has toD.must I saw him come into the classroom.（同义句） I saw him ———— the classroom. i n______ him come out of the room i saw him ____ the supermarket just nowA,go b,come c,enter d,arrive I saw him _______(put) on his coat and ______(go) out just now i saw him (go) out of the room.三单后不是跟goes吗? I saw him go out of the room.(第二个动词go为什么不用过去式..谢) i saw him get out of room just now 请问为什么get不是wet或getting? I saw him ( )out of dolls.A go B had go C hsa go D goes i saw him taking out a paper请问,TAKING 这里是动名词还是现在分词为什么