问大家一个关于英语语法的问题..老师写了一个句子（I saw an old man knocked down by a

问大家一个关于英语语法的问题..老师写了一个句子（I saw an old man knocked down by a The old man was knocked down by a car [ ]he saw it run towar I saw an old man k_____ down by a car yesterday. 是“I saw an old man fall down”还是“I saw an old man fell down” 问大家一个关于英语语法的问题. “I saw an old lady knock down by a motorbike while she was w the old man was knocked down by a taxi when he was crossing Linda saw an old man ______down by a _______ bus. 英语语法问题老师问几个问题I saw the house burning last night这个句子属于动名词的复合结 问一个英语语法问题.关于,从句的 问一个关于英语语法的问题 问一个关于英语语法的问题,