1.He "credited" his success to his parents. 2.He "was credited" with making coffee popular. 請問句子中要不要用be動要用什麼判斷?

更新: 1.He "credited" his success to his parents.
2.He "was credited" with making coffee popular.
我知道句子如果有一般動詞就不用用be動,但如果要表被動就需要加上be動,但是第二句沒有表被動的意思,那為什麼要加be動?
請問句子中要不要用be動要用什麼判斷?
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