Hi,
So, the answer is 'yes', depending on the situation.
As I recollect, George Bush said something like 'I swear to uphold the constitution of the United States . . '. In court, you say 'I swear to tell the truth . . .' In a wedding, the bride and groom say 'I do'.
On the other hand, Tarzan said 'Me Tarzan'.
Clive