preface

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

《簡單現在式》
I preface
You preface
He prefaces
She prefaces
It prefaces
We preface
You preface
They preface

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

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

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

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

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

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

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

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

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

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