`1` It is cold outside . Don't go out .
`2` Apples are very good for health .
`3` Lots of children have chapped lips in this season .
`4` Long and Tuan don't do morning exercise every day.

`5` You should't eat too much fast food . You should eat more vegetable and fruits .
`6` We often play football at school .

`7` My friends love outdoor and indoor activities .
`8` We should wear hat and sunscreen to avoid damage from the sun .

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`@` Should `+` V: nên làm gì

`@` should `+`not `+`V: không nên làm gì

`@` love `+` V-ing: thích làm gì

`@` Cấu trúc HTĐ:

`-` với động từ tobe

`+)`S + am/ is/ are+ N/ Adj

`-)`S + am/are/is + not +N/ Adj

`?)`Am/ Are/ Is (not) + S + N/Adj?

`-` Với V thường

`+)`S + V(s/es)

`-)`S + do/ does + not + V(nguyên thể)

`?)` Do/ Does (not) + S + V (nguyên thể)?