strengthen

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

《簡單現在式》
I strengthen
You strengthen
He strengthens
She strengthens
It strengthens
We strengthen
You strengthen
They strengthen

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

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

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

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

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

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

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

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

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

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