EX1: THE PRESENT PERFECT >> THE PAST SIMPLE
1, When did you have it?
=> How long have you had it?
EX2: THE PRESENT PERFECT/ THE PAST SIMPLE
1, DID Susan GO to England by plane? (to go)
2, DID YOU VISIT the CN tower when you HAVE STAYED in Tonroto? (you/ to visit/ to stay)

ex1. present perfect sang past simple
1. when did you have it?
=>how long. have you had it? .
ex2. present perfect /past simper
1Did susan go to england by plane?(to go)
2.Did you visit the CN tower when you .stayed in tonroto?(you/to visit -to stay)

ex1. present perfect sang past simple
1. when did you have it?
=>how long have you had it?
( Dịch: bạn đã có nó được bao lâu)
ex2. present perfect /past simper
1...............Did...susan.....go..........to england by plane?(to go)
--> Susan đã đi Anh bằng máy bay phải không?
2....Did you visit.........the CN tower when you ...stayed....in tonroto?(you/to visit -to stay)
--> Bạn có thăm tháp CN khi mà bạn ở Toronto không?