itispossibletodosth和itpossibletodosth谁是正确的

itispossibletodosth\u548citpossibletodosth\u8c01\u662f\u6b63\u786e\u7684

It is possible to do sth\u662f\u6b63\u786e\u7684\uff0cPossible\u662f\u5f62\u5bb9\u8bcd\uff0c\u4f5c\u8868\u8bed\uff0c\u8981\u7528\u7cfb\u52a8\u8bcd\u6765\u5f15\u5bfc

\u505c\u8bfe\u4e0d\u505c\u5b66 \u5411\u5b66\u751f\u89e3\u91ca\u82f1\u8bed\u4e2d\u8868\u793a\u201c\u6709\u53ef\u80fd\u201d\u768412\u4e2a\u8bcd\u7684\u7528\u6cd5

都是正确。
这是it的两个不同用法
it is possible to do 是it做形式主语，例如It is possible to answer the question
而it possible to do 是it做形式宾语的用法，例如Do you think it possible to work out this problem.

itisnormaltodosth做什么事是非常正常的这里it作形式主语，todosth是真正的主语

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