lack

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

《簡單現在式》
I lack
You lack
He lacks
She lacks
It lacks
We lack
You lack
They lack

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

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

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

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

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

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

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

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

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

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