Japanese or English?

This semester, I take the “Advanced Flash Memory”.

The adviser is a Japanese, SHIROTA RIICHIRO, and the common language that we can use I think is English.

However, It’s seem that he can not give up the Japanese while speaking English.

For instance, he want to make sure that all us understand that he will say:
“it’s ok.です”,“あの…we can…”etc.

If he cant find the page or the points hw want to explain, you will heard“どこに…”.

It's fun though I am still in a little trouble to identify the Japanese type of English.