stack

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

《簡單現在式》
I stack
You stack
He stacks
She stacks
It stacks
We stack
You stack
They stack

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

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

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

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

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

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

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

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

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

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