undulate

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

《簡單現在式》
I undulate
You undulate
He undulates
She undulates
It undulates
We undulate
You undulate
They undulate

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

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

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

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

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

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

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

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

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

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