The form overcome is used in the present tense and is also the past participle. overcome的过去分词与原形相同。
1
[VERB 动词]克服;控制;战胜 If you
overcome a problem or a feeling, you successfully deal with it and control it.
2
[VERB 动词](感情上)受到极大影响,承受不起 If you
are overcome by a feeling or event, it is so strong or has such a strong effect that you cannot think clearly.
The night before the test I was overcome by fear and despair...
考试前的晚上,恐惧和绝望让我内心无比惊慌。
A dizziness overcame him, blurring his vision.
他感到一阵眩晕,眼前发黑。
3
[VERB 动词](烟、毒气等)熏倒,使受不了 If you
are overcome by smoke or a poisonous gas, you become very ill or die from breathing it in.