`-` `D`. Gone for
`->` 's  `=>` Has  `=>` HTHT.
`->` HTHT : S + has/have + P2.
`->` John đã ra ngoài: Anh ấy đi lấy sữa

`color{lightblue}{"D : gone for"}`
`->` John has gone out: He's `"gone for"` some milk
`@`He`'s` `=` he has `->` `"Present Perfect"`
`@`S `+` have`/`has`(`not`)` `+` V`-`ed`/`p`"II"`
`+)`Go for `+` sb`/`sth `:` to go to a place and bring sb`/`sth back