There is

(+) There is + a/an + N số ít

(-) There isn’t + a/an + N số ít

(?) Is there + a/an + N số ít?

There are

(+) There are + số lượng  + N số nhiều

(-) There aren’t + any + N số nhiều

(?) Are there + any + N số nhiều?

Công thức thì HTĐ (V: thường)

S số ít, he, she, it 

(+) S + Vs/es

(-) S+ doesn't + V1 

(?) Does +S +V1?

--> Yes, S + does

--> No, S + does

S số nhiều, I, you, we, they

(+) S + V1 

(-) S+ don't + V1 

(?) Do + S+ V1? 

--> Yes, S + do

--> No, S + don't

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

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II)

1. Does / have / doesn't 

2. Do / have / do 

3. Do / have / do 

4. Does / have / doesn't 

5. Does / have / doesn't 

6. Do / have / do 

7. Do / have / do 

8. Does / have / does

9. Do / have / don't 

10. Do / have / do

III)

1. Are 

2. isn't 

3. are 

4. Is 

`color{orange}{~MiaMB~}`