take for granted
1．suppose or understand to be true 假定是真的；对…信以为真
He took for granted that the invitation included himself．他认为他自己一定是在被邀请之列。
A teacher cannot take it for granted that students always do their homework．老师不能假定学生们一定会做家庭作业。
2．assume；accept as a fact that does not need any confirmation or verification 假定；认为理所当然
I take it for granted that he will come．我认为他当然会来的。
We take it for granted that they would consent．我们认为他们一定会同意的。
Excuse me for not introducing you to Kermit．I took it for granted that you two knew each other．对不起，我没有把你介绍给凯米特，我想当然地认为你们互相认识。
All particulars should be carefully checked and verified；nothing should be taken for granted．所有的细节都应当仔细查对、核实，任何一点都不能想当然。