OvercomeGradually he allowed himself to be overcome with enthusiasm.渐渐地,他也变得热情高涨了.这里的 overcome为什么不是overcame?

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OvercomeGradually he allowed himself to be overcome with enthusiasm.渐渐地,他也变得热情高涨了.这里的 overcome为什么不是overcame?

OvercomeGradually he allowed himself to be overcome with enthusiasm.渐渐地,他也变得热情高涨了.这里的 overcome为什么不是overcame?
Overcome
Gradually he allowed himself to be overcome with enthusiasm.
渐渐地,他也变得热情高涨了.
这里的 overcome为什么不是overcame?

OvercomeGradually he allowed himself to be overcome with enthusiasm.渐渐地,他也变得热情高涨了.这里的 overcome为什么不是overcame?
be后面用过去分词表被动.
The food was eaten,不说was ate,对吗?

overcome的被动形式就是 OVERCOME
OVERCAME是过去式。

因为overcome的时态为:
现在分词--overcome 过去式--overcame 过去分词--overcome
这句的动词是被动,需用过去分词表被动