`@` `1:`

`-` S + V-s/es + ...

`-` S + do/does + V-inf ...

`1)` I am a student at that high school.

`->` I was a student at that high school

`2)` She doesn't have enough money to buy the hat.

`->` She didn't have enough money to buy the hat.

`3)` We are Ms. Hoa's students.

`->` We were Ms. Hoa's students.

`4)` You do your homework at night.

`->` You did your homework at night.

`5)` I don't like reading long paragraphs.

`->` I didn't like reading long paragraphs.

`@` `2:`

`-` S + be + V-ing ...

`1)` We are playing soccer.

`->` We were playing soccer.

`2)` She isn't listening to music.

`->` She wasn't listening to music.

`3)` Are you doing your work?

`->` Were you doing your work?

`4)` I am going to John's house.

`->` I was going to John's house.

`5)` Mike is playing the piano.

`->` Mike was playing the piano.

`@` `3:`

`-` S + V-ed + ...

`1)` She did all the homework herself.

`->` She had done all the homework herself.

`2)` He wrote the song.

`->` He had written the song.

`3)` We did our chores.

`->` We had done our chores.

`4)` They were construction workers.

`->` They had been construction workers.

`5)` They broke up.

`->` They had broken up.

`@` `4:`

`-` S + have/has + V3 ...

`1)` I have been to Italy.

`->` I had been to Italy.

`2)` Have you checked your work?

`->` Had you checked your work?

`3)` She has taught the students this lesson.

`->` She had taught the students this lesson.

`4)` We have danced to this tune.

`->` We had danced to this tune.

`5)` I have asked her out.

`->` I had asked her out.

`@` `5:`

`-` S + had + V3 ...

`1)` I had dated him when I was in high school.

`2)` Had they gone to Vietnam?

`3)` She hadn't met him.

`4)` Mike and Tom had fought with each other.

`5)` We had `5` more minutes before the meeting started.

`@` `6:`

`-` S + will + V-inf ...

`1)` We will meet you tomorrow.

`->` We would meet you the next day.

`2)` She won't go to the party.

`->` She wouldn't go to the party.

`3)` Will you marry me?

`->` Would you marry me?

`4)` He will go swimming.

`->` He would go swimming.

`5)` They will be at the airport.

`->` They would be at the airport.

@magnetic