Giúp mình với ạ mình không biết làm

Các công thức đổi HTHT - QKĐ

Structure 1: 

S + has/have + not + V3/ed + for/since + time 

--> S + last + V2/ed 

--> The last time + S+ V2/ed + was + time 

--> It is / has been + time + since + S+ (last) + V2/ed 

Structure 2: 

How long + has/have + S+ V3/ed?

--> When + did + S + V1?

--> How long is it + since + S+ V2/ed ?

Structure 3:

S + has/have + V3/ed + for/since + time 

--> S + started / began + to V / Ving 

--> It is / has been + time + since + S+ V2/ed 

Structure 4: 

S + has/have + not/never + V3/ed + ... before

--> This/It is the first time + S+ has/have+ V3/ed

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6. He has not gone to the cinema since May.

7. 

- She last had her eyes checked over 6 months ago.

- The last time she had her eyes checked was over 6 months ago.

- It’s over 6 months since she last had her eyes checked.

8. He is the most interesting clown the kids have ever met.

9. We have not attended a wedding since last year.

10. They have worked for this department since last week.

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