Someone saw him ______ (fall) off the horse just now.填was falling为什么错了?

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Someonesawhim______(fall)offthehorsejustnow.填wasfalling为什么错了?Someonesawhim______(fall)offthehorsejus

Someone saw him ______ (fall) off the horse just now.填was falling为什么错了?
Someone saw him ______ (fall) off the horse just now.填was falling为什么错了?

Someone saw him ______ (fall) off the horse just now.填was falling为什么错了?
因为 saw ,即see的过去式,see构成词组see sb do sth.(看到这么一回事) 或see sb doing sth.(看到这一过程)此句应该表示前者,所以用fall原形.
另外,如果用第二种用法的话,用不用was,你可以看前面,它用的是宾格him,所以只能用doing;如果是主格he,就要用was falling了

1.see表示看见时,通常有两种句式:A. see sb doing sth看见某人正在做某事(强调时间的点,是一个不间断活动的一个片段,动作在前面可能已经发生,并有可能继续下去) B. see sb do sth看见某人经常做某事,看见某人做某事的全过程。(经常与频率副词连用表示经常性,动词也与into,on,out,off等连用来表示全过程 )。
从马上掉下来,所看到的是全过程,而不会...

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1.see表示看见时,通常有两种句式:A. see sb doing sth看见某人正在做某事(强调时间的点,是一个不间断活动的一个片段,动作在前面可能已经发生,并有可能继续下去) B. see sb do sth看见某人经常做某事,看见某人做某事的全过程。(经常与频率副词连用表示经常性,动词也与into,on,out,off等连用来表示全过程 )。
从马上掉下来,所看到的是全过程,而不会是一个片段。所以选fall.做几个习题。
1. When I passed by,I saw Tom_____ (clean) the ground.
2.When I was young,I often saw him_______(walk )in the park.
3.He failed to see the teacher_______(come) into the classroom.
1,cleaning,2, walk. 3. come

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see sb doing sth
不要be动词的。
表示看见某人的某种状态。
Someone saw him ___falling___ (fall) off the horse just now.
希望能解决你的疑问O∩_∩O~

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