thì HTĐ 

→ ( + ) S + vs/es → he often goes to school by bus

→ ( - ) S + don't /doesn't + V nguyên mẫu → she doesn't go to school by bus / i don't go to school by bus

→ (? ) do / does + S + V nguyên mẫu → do they often  play football ? / does he always get good mark ?

thì HTTD

→ ( + ) S + be + V-ing →  I am having breakfast now 

→ ( - ) S + be not + V-ing : he isn't eating bread now 

→ ( ? ) be + S + V-ing : is she playing the piano now ?

Thì HTĐ:

+)I/you/we/they+V (ko to)

He/she/it+V+s/es

VD:I like films.I often go to the cinema

-)I/you/we/they+don't+V (ko to)

He/she/it +doesn't+V

VD:I don't watch Tv every evening

?)Do+I/you/we/they+V ?

Does+he/she/it +V ?

VD: Do you learn English everyday?

Thì HTTD:

+)I+am+Ving

You/we/they+are+Ving

he/she/it+is+Ving

VD:I am sleeping

-)I+am+not+Ving

You/we/they+are+not+Ving

He/she/it+is+not+Ving

VD:

I am not sleeping

?)Am+I+Ving?

Are +you/we/they+Ving

Is+he/she/it+Ving

Vd:

Is she driving to work?