Exercise 1:Put the verbs in brackets into the correct tense: past perfect or past simple. (Chia ĐT trong ngoặc ở thì QK hoàn thành hoặc QK đơn) 1. Alm

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1. `text{1. had left – arrived}`
   `text{2. wondered  – had left}`
   `text{3. didn’t leave – had finished}`

   `text{4. didn’t eat  – came}`
   `text{5. asked – hadn’t done}`
   `text{6. had – posted  – realized – had sent}`
   `text{7. had – gone – had}`
   `text{8. is – expected}`
   `text{9. had been married – had}`
   `text{10. had finished – went}`

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2. 1. Almost everybody (leave) had left  by the time we (arrive) arrived 
   2. He (wonder) wondered  whether he (leave) had left his wallet at home.
   3. The secretary (not leave) didn’t leave until she (finish) had finished her work. 

   4. He (not eat) didn’t eat  until his parents (come) came home.
   5. The teacher (ask) asked  the boy why he (not do) hadn’t done his homework.
   6. She had already (post) posted  the letter when she (realize) realized  she (send) had sent  it to the wrong address.
   7. Hardly had the car (go) gone a mile when it (have) had  a flat tire.
   8. The weather (be) is  far worse than we (expect) expected 
   9. They (be married) had been married  for five years when thy finally (have) had  a child.
   10. When she (finish) had finished her work she (go) went to the cinema.

   Cấu trúc được dùng

   After/ whether/until/ + Quá khứ hoàn thành,Quá khứ đơn

   Before/when + Quá khứ đơn , Quá khứ hoàn thành

   When/Why + Quá khứ hoàn thành,Quá khứ đơn

   Tuỳ trường hợp thì dùng các trường hợp khác nhau của when nhá

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