last week john fell and broke his leg.事件不是发生在过去吗?为什么用fell and broke

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last week john fell and broke his leg.事件不是发生在过去吗?为什么用fell and broke

last week john fell and broke his leg.事件不是发生在过去吗?为什么用fell and broke
last week john fell and broke his leg.
事件不是发生在过去吗?为什么用fell and broke

last week john fell and broke his leg.事件不是发生在过去吗?为什么用fell and broke
对啊,是发生在过去.所以用过去时啊

对啊,一般过去时啊。
原型 过去式 过去分词
fall fell fallen
break broke broken