that's done it什么意思 That's undoubtedly done it呢

Question

that's done it什么意思 That's undoubtedly done it呢
什么意思啊 done it 这句话语法对吗？

done在这里是it的形容词？

Answer 1

that's done it是完成时态。has done。do it语法无误。do是及物动词。
done是动词过去分词。
其次，一些成语，俗语的意思是约定俗成的。记住就好。比如
a piece of cake
小事一桩
small potato
小人物。
供参考。
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that's done it！

1. [口] 完蛋了
2. [口] 好了,行了,够了!

That's undoubtedly done it！

undoubtedly的意思是无疑地，绝对地
整句意思是
绝对完蛋啦！
完全好了！