Công thức thì HTĐ (V: thường)

S số ít, he, she, it 

(+) S + Vs/es

(-) S+ doesn't + V1 

(?) Does +S +V1?

S số nhiều, I, you, we, they

(+) S + V1 

(-) S+ don't + V1 

(?) Do + S+ V1? 

DHNB: always, usually, sometimes, often, never, seldom,....

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3. The flight from Ho Chi Minh City doesn't arrive at 10:30.

4. Our science teacher starts our lessons at 1 p.m. on Fridays.

5. Do you make models at the weekend? 

`color{orange}{~MiaMB~}`

3. The flight from Ho Chi Minh City doesn't arrive at 10:30. 

4. Our science teacher starts our lessons at 1 p.m on Fridays.

5. Do you make models at weekend. 

=> HTĐ:

(+) S + V(es/s) 

(-) S do/does + not + V(inf) 

(?) Do/does + S + V(inf) 

DHNB: always, on fridays, at the weekend, usually, often, sometimes,...

@Linhdannguyen2312