that's done That's undoubtedly done it呢that's done That's undoubtedly done it呢done it 这句话语法对吗？done在这里是it的形容词？

that's done That's undoubtedly done it呢
that's done That's undoubtedly done it呢
done it 这句话语法对吗？
done在这里是it的形容词？

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.
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!