Tom nereye gitmesi gerektiğini kesin olarak bilmiyordu.
- Tom didn't know for certain where he should go.
Tom yeni bilgisayarın ne kadara mal olacağını kesin olarak bilmiyordu.
- Tom didn't know for certain how much the new computer would cost.
For certain.
... why I made certain decisions, that instead of regretting ...
... you come here for so long and we've got his certain experiencing in working in ...