`Đáp` `án:`

1. Where does your family usually go on the first day of Tet?

2. How long does Tet last?

3. What should people do before Tet?

4. Why shouldn't people eat duck meat at Tet?

5. When will you visit your relatives?

6. How old is Mount Everest?

7. Where is the Grand Canyon?

8. What is the highest mountain in the world?

9. How can visitors get to Angel Falls?

10. How often does he play volleyball?

---------------------------------------------

Where: ở đâu 

How long: bao lâu 

What: cái gì 

Why: tại sao 

When: khi nào 

How old: tuổi 

How: như thế nào 

How often: tần suất 

---------------------------------------------

Should + S+V1? nên 

Can + S+ V1? có thể 

---------------------------------------------

Công thức thì HTĐ (V: tobe)

(+) S + am/is/are +adj/N/O

(-) S + am/is/are + not + adj/N/O

(?) Am/Is/Are + S + adj/N/O ? 

I + am

S số ít, he, she, it + is

S số nhiều, you ,we, they + are

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,....

Công thức thì TLĐ

(+) S + will + V1 

(-) S + won't + V1 

(?) Will + S+ V1? 

DHNB: in the future, in + năm ở TL, in + time, next week, next year, ....