I think it's Tom's如何改成否定句是改主句还是改从句,说出道理

问题描述:

I think it's Tom's如何改成否定句
是改主句还是改从句,说出道理

I don't think it's Tom's

i don't think it's Tom's

I don't think it's Tom's.

I don't think it's Tom's
必须改主句,这是英文的习惯说法

I don't think it's Tom's.
改主句,这叫“否定前置”.