concenter

《簡單過去式》
I concentered
You concentered
He concentered
She concentered
It concentered
We concentered
You concentered
They concentered

《簡單現在式》
I concenter
You concenter
He concenters
She concenters
It concenters
We concenter
You concenter
They concenter

《簡單未來式》
I will concenter
You will concenter
He will concenter
She will concenter
It will concenter
We will concenter
You will concenter
They will concenter

《過去進行》
I was concentering
You were concentering
He was concentering
She was concentering
It was concentering
We were concentering
You were concentering
They were concentering

《現在進行》
I am concentering
You are concentering
He is concentering
She is concentering
It is concentering
We are concentering
You are concentering
They are concentering

《未來進行》
I will be concentering
You will be concentering
He will be concentering
She will be concentering.
It will be concentering
We will be concentering
You will be concentering
We will be concentering

《過去完成》
I had concentered
You had concentered
He had concentered
She had concentered
It had concentered
We had concentered
You had concentered
They had concentered

《現在完成》
I have concentered
You have concentered
He has concentered
She has concentered
It has concentered
We have concentered
You have concentered
They have concentered

《未來完成》
I will have concentered
You will have concentered
He will has concentered
She will have concentered
It will have concentered
We will have concentered
You will have concentered
They will have concentered

《過去完成行進》
I had been concentering
You had been concentering
He had been concentering
She had been concentering
It had been concentering
We had been concentering
You had been concentering
They had been concentering

《現在完成行進》
I have been concentering
You have been concentering
He has been concentering
She has been concentering
It has been concentering
We have been concentering
You have been concentering
They have been concentering

《未來完成行進》
I will had been concentering
You will had been concentering
He will had been concentering
She will had been concentering
It will had been concentering
We will had been concentering
You will had been concentering
They will had been concentering