AN A100 KING AIR CHARTER PLT HAS CLRNC CHANGED AS HE TAXIES OUT AND IS REQUESTED TO USE AN INTXN TKOF. IN COMPLETING CHKLISTS AND REVIEWING DEP HE MISINTERPS CLRNC AND BEGINS TKOF ROLL. TWR HAS HIM ABORT.

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30 MINS PRIOR TO DEP FROM SFO; I RECEIVED MY DEP CLRNC. WE WERE TO DEPART ON RWY 28R. AFTER START; WE WERE CLRED TO TAXI TO RWY 28R VIA TXWY C THEN TXWY E. AT TXWY E; WE HAD A CHANGE OF CLRNC TO RWY 1R AND CLRED TO CROSS RWY 28R (ACTIVE LNDG RWY); TURN L ON RWY 28L (CLOSED); R ON RWY 1L TO RWY 1R. JUST AS WE ARRIVED AT THE INTXN ON RWY 28L AND RWY 1L WE WERE ASKED IF WE COULD ACCEPT RWY 1L INTXN FOR TKOF. AFTER CONFIRMING WE HAD ENOUGH RWY LEFT; I ADVISED THE TWR I COULD ACCEPT THIS INTXN FOR DEP. AS I WAS DOING MY PRE TKOF AND LINE-UP CHKLISTS; I THOUGHT I CONFIRMED I WAS CLRED FOR TKOF. UPON COMPLETION OF CHKLISTS AND CONFIRMING THERE WAS NO TFC FOR RWY 28R; I ADVANCED PWR FOR TKOF. THE TWR CALLED AND SAID HE HAD NOT CLRED US FOR TKOF AND I IMMEDIATELY ABORTED. ON TAXIING BACK INTO POS; THE TWR STATED HE HAD CLRED US INTO POS AND RPT WHEN READY. AS I WAS BUSY WITH RUNNING CHKLISTS AND GOING OVER THE DEP; I MUST HAVE MISUNDERSTOOD THE TWR. I WAS ALSO A LITTLE NERVOUS ABOUT SITTING ON THE INTXN OF 2 RWYS; EVEN THOUGH RWY 28L WAS CLOSED AT THE TIME. MY ONLY EXCUSE FOR MISSING THE CLRNC TO HOLD WAS BEING DISTR.