"I missed the bus" "I have missed the bus"
There is no time mentioned like yesterday or anything so it's "I have missed.."
Right ?

Question

"I missed the bus" "I have missed the bus"
There is no time mentioned like yesterday or anything so it's "I have missed.." 
Right ?

Answer

Correct

Answer

I would just say I missed the bus. With or without a time reference.

Answer

Present perfect tense in this sense is used when there is no time frame in the sentence.

As soon as we use a time frame , for example,

I missed the bus this morning/yesterday/ last night etc

It automatically becomes past simple