take it for grant 理所当然；认为当然

【例句】
They take it for grant that after the war a brave new world is to be ushered in.
他们理所当然地认为战后必将迎来一个美好的新世界。

I take it for granted that you will come and talk the matter over with him.
我理所当然地认为，你会来跟他谈这件事的。