When my little son was learning to walk,I often saw him______down.A.fell B.feel C.felt D.fall
问题描述：
When my little son was learning to walk,I often saw him______down.A.fell B.feel C.felt D.fall
答
选D fall down摔倒我的小儿子在学走路的时候,我经常看到他摔倒.有下面两种固定搭配要记住：see sb do sthsee sb doing sth加动词原形do sth表示看见整个动作发生的过程,或表示看到的事件是真实发生过了的加动词现在...