A
`1` has broken
`2` has come out
`3` hasn't visited
`4` have lost
`5` haven't finished
`6` hasn't read
-> Thì hiện tại hoàn thành : S + has / have + Vpp+ O
B.
`1` since
-> my birthday là 1 mốc thời gian -> dùng since
`2` for
-> ten years là 1 khoảng thời gian -> dùng for
`3` since
-> last Thursday là 1 mốc thời gian -> dùng since
`4` since
-> I was born là 1 mốc thời gian -> dùng since
`5` for
-> for a few days là 1 khoảng thời gian -> dùng for
`6` since
-> 1990 là 1 mốc thời gian -> dùng since
`7` for
-> a long time là 1 khoảng thời gian -> dùng for
@ Dorris
