2.we(never/go)to sapa before 3.mai(not/finish)her work yet 4.they(already/see) this film 5.she(not/play) football yesterday 6.Lan(not/meet) her friend since she (study) at the rimary school 7.what is your height? =>how 8.how heavy is your brother? =>what

2. We have never gone to Sapa before.

Công thức: have/has + never + past participle (V3)

3. Mai has not finished her work yet.

Công thức: have/has + not + past participle (V3) + yet

4. They have already seen this film.

Công thức: have/has + already + past participle (V3)

5. She did not play football yesterday.

Công thức: did + not + base form of the verb (V1)

6. Lan has not met her friend since she studied at the primary school.

Công thức: have/has + not + past participle (V3) + since + past simple

7. What is your height? => How tall are you?

Công thức: sử dụng từ "tall" thay cho "height" và đảo ngữ câu hỏi

8. How heavy is your brother? => What is your brother's weight?

Công thức: sử dụng từ "weight" thay cho "heavy" và đảo ngữ câu hỏi