`color{red}{-uyen-}`

`1`. They work in an office

`2`. She studies every day

`3`. He goes to school at eight o'clock

`4`. I buy sandwiches for lunch every day

`5`. Our dog watches TV with us

`6`. We eat dinner at seven o'clock

`7`. She lives in New York with her sister

`8`. The train leaves at 10:30 a.m

`-----`

`@` HTĐ

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

 `(-)` S + do/does + not + V(bare) + O

`(?)` Do/does + S + V(bare) + O?

`@` N(số ít/nhiều)

`-` N(số ít) : he/she/it/... + V(s/es)

`-` N(số nhiều) : I/we/you/they/... + V(bare)

`color{red}{#umbrella}`

`1` They work in an office .

`2` She studies every day .

`3` He goes to school at `8` o'clock .

`4` I buy sandwiches for lunch every day .

`5` Our dog watches TV with us .

`6` We eat dinner at `7` o'clock .

`7` She lives in New York with her sister .

`8` The train leaves at `10:30` `a.m` .

`->` HTD :

`(+)` S + be + ... `/` S + V(s,es) .

`(-)` S + be + not + ... `/` S + don't/doesn't + V .

`(?)` Be + S + ... `?` `/` Do/Does + S + V `?`

`@` Wh-question + be + S + ... `?` `/` Wh-question + do/does + S + V `?`