I am finished drinking.请问这句是什么时态.

I am finished drinking.请问这句是什么时态. i am been losing sleep 请问这是什么时态 I finished reading a book last night.这是什么时态? I am beautiful 是什么时态? I am sleep 是什么时态 she's always drinking water.这是什么时态 I am finished. I am finished 请问I have finished my work 和I am finished my work I am drinking water和I drinking区别 I am sitting down是什么时态 I am not see 是什么时态?