`@` Lùi thì :

`-` HTĐ `->` QKĐ

`-` HTTD `->` QKTD

`-` HTHT/QKĐ `->` QKHT

`-` HTHTTD `->` QKHTTD

`-` QKTD `->` QKHTTD

`-` Will `→` Would 

`-` Can `→` Could

`-` Must/Have to `→` Had to

`-` May `→` Might

`@` Đổi S :

`-` I `→` He/She

`-` You `→` I/We/They

`-` We `→` We/They

`@` Đổi đại từ tân ngữ :

`-` Me `→` Him/Her

`-` You `→` Me/Us/Them

`-` Us `→` Us/Them

`@` Đại từ sở hữu :

`-` My `→` His/Her

`-` Your `→` My/Our/Their

`-` Our `→` Our/ Their

`@` Tính từ sở hữu :

`-` Mine `→` His/Hers

`-` Yours `→` Mine/Ours/Theirs

`-` Ours `→` Ours/Theirs

`@` Đại từ chỉ định :

`-` This `→` that

`-` These `→` those

`@` Đổi trạng ngữ : 

`-` Here `→` There

`-` This `→` That

`-` These `→` Those

`-` Now `→` Then/ at the moment

`-` Today/ tonight `→` That day/ that night

`-` Tomorrow `→` The next day

`-` Next week `→` The following week

`-` This week `→` That week

`-` Yesterday `→` The previous day/ the day before

`-` Last day `→` The day before

`-` Last week `→` The week before

`-` Ago `→` Before

`-` The day before `→` Two days before