I saw him fly the kite yesterday afternoon
see sb.do看见某人做了某事
I saw him flying the kite yesterday afternoon
昨天下午,我看见他【在】放风筝.怎样分辨啊see sb. do 是看到整个过程see sb. doing是看到正在做其它感官动词也是这样我经常听到他弹钢琴 I often hear him play the piano我刚才听到他【在】弹钢琴i heard him playing the piano just now. 汉语能翻译出‘在’