HOW LONG
It rained almost everyday during our last summer vacation.
HOW LONG did it rain during your last summer vacation?
It rained almost everyday during our last summer vacation.
WHEN did it rain almost everyday?
I've invited my grandparents to go on vacation with me next month.
WHO have you invited your grandparents to go on vacation with next month?
WHO have you invited to go on vacation with you next month?
My parents and I have been to Acapulco on vacation four times.
WHO has been to Acapulco on vacation four times?
My last long vacation was three years ago.
WHOSE last long vacation was three years ago?
My next-door neighbors are going to be out of town all summer.
HOW LONG are your next-door neighbors going to be out of town?
My last long vacation was three years ago.
HOW LONG AGO was your last long vacation?
Several of my relatives from the States are going to visit me during their next summer vacation.
WHO are several of your relatives from the States going to visit during their next summer vacation?
My classmates have been on vacation for several weeks.
WHO has been on vacation for several weeks?
I've been on vacation since last summer.
HOW LONG have you been on vacation?
My summer vacation began three weeks ago.
HOW LONG AGO did your summer vacation begin?
We've been very tired recently because we haven't had a vacation in a long time.
WHO has been very tired recently because he/she/they hasn't/haven't had a vacation in a long time?
My last long vacation was three years ago. (Follow up question)
HOW LONG was your last long vacation three years ago?
(Follow up question)
I've been on vacation since last summer.
When did your vacation begin?
Several of my relatives from the States are going to visit me during their next summer vacation.
WHO is going to visit you during his/her/their next summer vacation?
My summer vacation began three weeks ago. (Follow up question)
HOW LONG is your summer vacation (that began three weeks ago) going to be?
(Follow up question)
My next-door neighbors are going to be out of town all summer.
WHO is going to be out of town all summer?