`-` Thì HTĐ :

`+` KĐ : S + Vs / es `-` S + is / am / are + adj / n

`+` PĐ : S + don't / doesn't + V `-` S + isn't / 'm not / aren't + adj / n

`+` NV : Do / Does + S + V `?` `-` Is / Am / Are + S + adj / n `?`

`=>` `DHNB` : usually , never , often , ...

`1`.Susan is never late for school

`2`.My brother doesn't usually write letters to his friends

`3`.We go on holidays twice a year

`4`.Peter sometimes wears a tie

`5`.I eat fish once a week

`6`.Do the children often watch TV ?

`7`.My father is always very busy

`8`.Peter never tidies his room

`9`.My brother and I go fishing every week

`10`.My mother always goes shopping on Saturdays

`11`.Do you usually get up late at the weekend ?

`\text{# TF}`

`Answer:`

`1.` Susan is never late for school.

`2.` My brother doesn't usually write letters to his friends.

`3.` We go on holidays twice a year.

`4.` Peter sometimes wears a tie.

`5.` I eat fish once a week.

`6.` Do the childten often watch TV?

`7.` My father is always very busy.

`8.` Peter never tidies his room.

`9.` My brother and I go fishing every week.

`10.` My mother always goes shopping on Saturdays.

`11.` Do you usually get up late at the weekend?

`->` Cấu trúc thì Hiện tại đơn:

`-` với động từ:

`(+)` S + trạng từ chỉ tần suất + Vs/es

`(-)` S + don't/doesn't + trạng từ chỉ tần suất + V

`(?)` Do/Does + S + trạng từ chỉ tần suất + V?

`-` với tobe:

`(+)` S + am/is/are + trạng từ chỉ tần suất

`(-)` S + am/is/are + not + trạng từ chỉ tần suất

`(?)` Am/Is/Are + S + trạng từ chỉ tần suất?