CÁCH GIẢI:

*Cấu trúc:

- The Past Perfect (Thì quá khứ hoàn thành) + before/after/that/because/.... + The Simple Past (Thì quá khứ đơn)

- The Past Perfect (Thì QKHT):

+ KĐ: S + had + V_pII

+ PĐ: S + had not (hadn't) + V_pII

+ Nghi vấn: Had + S + V_pII?

- The Simple Past (Thì QKĐ):

+ KĐ:

~ Ordinary Verb (ĐT thường) :S + V_ed/V_pI

~ To be (ĐT to be):

I/he/she/it + was 

You/We/They + were 

+ PĐ:

~ Ordinary Verb (ĐT thường) : S + did not (didn't) + Vo

~ To be (ĐT to be):

I/he/she/it + was not (wasn't)

You/We/They + were not (weren't)

+ Nghi vấn:

~ Ordinary Verb (ĐT thường) : Did + S + Vo?

~ To be (ĐT to be):

Was + I/he/she/it + O? 

Were + You/We/They + O?

LỜI GIẢI CHI TIẾT:

1. had done

2. had done

3. was

4. sat/rested

5. had died/was

6. hadn't seen

7. told/had given

8. was/had had

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