在英语中，你可以这样表达“我的蚕死了”："My silkworms have died."
这句话的来源可能是你养蚕，并发现你的蚕已经死了。
下面是一些可能的英文例句，以及它们的中文翻译：
"I was so sad when I found out that my silkworms had died."
我发现我的蚕死了时非常难过。
"I had been taking good care of my silkworms, but somehow they still died."
我一直很好地照顾我的蚕，但不知何故它们还是死了。
"I was planning on selpng the silk from my silkworms, but now I can't because they died."
我本打算卖我的蚕的蚕丝，但现在我卖不了，因为它们死了。
希望这些例句能帮到你！